US Patent Class 174
ELECTRICITY: CONDUCTORS AND INSULATORS
 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| DF | CLASS NOTES | |
| 1 | DF | MISCELLANEOUS |
| 2 | DF | LIGHTNING PROTECTION |
| 3 | DF | .~ Rods |
| 4 R | DF | AIR TERMINALS |
| 4 C | DF | .~ Coated and radioactive |
| 5 R | DF | ELECTRIC SHOCK HAZARD PROTECTIVE DEVICES |
| 5 SB | DF | .~ Shock protection, body insulation |
| 5 SG | DF | .~ Shock protection, grounding devices |
| 6 | DF | EARTH GROUNDS |
| 7 | DF | .~ Driving type |
| 8 | DF | WITH FLUIDS OR VACUUM |
| 9 R | DF | .~ Current conductive fluid and/or vacuum |
| 9 F | DF | .~.~ Conductive fluid |
| 10 | DF | .~ With cable or conduit preinstallation devices |
| 11 R | DF | .~ With fluid-condition responsive and/or indicating means |
| 11 BH | DF | .~.~ Bushings |
| 12 R | DF | .~ With expansion and contraction means |
| 13 | DF | .~.~ Built into conduit or cable |
| 12 BH | DF | .~.~ Expansion bushings |
| 14 R | DF | .~ With fluid maintenance or conditioning means |
| 14 BH | DF | .~.~ Bushings |
| 15.1 | DF | .~ With cooling or fluid feeding, circulating or distributing |
| 15.2 | DF | .~.~ By heat pipe |
| 15.3 | DF | .~.~ For bushing or pothead |
| 15.4 | DF | .~.~ Superconductive type |
| 15.5 | DF | .~.~.~ For cable, conductor or joint |
| 15.6 | DF | .~.~ For cable, conductor or joint |
| 15.7 | DF | .~.~ For welding or furnace cable |
| 16.1 | DF | .~.~ By ventilation or gas circulation |
| 16.2 | DF | .~.~.~ Of bus bars or bus ducts |
| 16.3 | DF | .~.~.~ With heat sink |
| 17 R | DF | .~ Boxes and housings |
| 17.05 | DF | .~.~ Hermetic sealed envelope type (e.g., with exhaust stem) |
| 17.06 | DF | .~.~.~ Liquid seal |
| 17.07 | DF | .~.~.~ Combined lead-in and exhaust tube |
| 17.08 | DF | .~.~.~ With electric connector |
| 18 | DF | .~.~ With bushing, terminal or lead-in |
| 17 LF | DF | .~.~ Liquid filled |
| 17 GF | DF | .~.~ Gas filled |
| 17 SF | DF | .~.~ Solid filled |
| 17 VA | DF | .~.~ Venting, absorption, expansion |
| 17 CT | DF | .~.~ Closures, terminals, gaskets |
| 19 | DF | .~ Conduit or cable end structure |
| 20 | DF | .~.~ With fluid stops |
| 21 R | DF | .~ Conduit or cable joints |
| 22 R | DF | .~.~ With fluid stops |
| 22 C | DF | .~.~.~ Concentric |
| 21 JS | DF | .~.~ Joints: separable |
| 21 JR | DF | .~.~ Joints: rotatable |
| 21 JC | DF | .~.~ Joints: rotatable, coaxial |
| 21 C | DF | .~.~ Joints: coaxial |
| 21 CA | DF | .~.~ Joints: coaxial angle expansion |
| 23 R | DF | .~ With fluid stops |
| 23 C | DF | .~.~ Compositions |
| 24 | DF | .~ Conduits, cables and conductors |
| 25 R | DF | .~.~ Impregnated insulation type |
| 26 R | DF | .~.~.~ Multiple conductor |
| 26 G | DF | .~.~.~.~ Gas filled |
| 25 C | DF | .~.~.~ Impregnating compositions |
| 25 G | DF | .~.~.~ Gas filled |
| 25 P | DF | .~.~.~ Processes |
| 27 | DF | .~.~ Parallel or twisted conductors |
| 28 | DF | .~.~ Coaxial or concentric type |
| 29 | DF | .~.~.~ With spiral spacer |
| 30 | DF | .~ Insulators |
| 31 R | DF | .~.~ Axial passage and/or through wall or plate |
| 31.5 | DF | .~.~.~ Liquid sealed joint |
| 31 S | DF | .~.~.~ Spark plugs |
| 32 | DF | ANTI-INDUCTIVE STRUCTURES |
| 33 | DF | .~ Conductor transposition |
| 34 | DF | .~.~ Conduit or cable structure |
| 35 R | DF | .~ Shielded or screened |
| 36 | DF | .~.~ Conductor only |
| 35 C | DF | .~.~ Connectors and joints |
| 35 SM | DF | .~.~ Spark plugs, manifolds |
| 35 GC | DF | .~.~ Gaskets, covers |
| 35 CE | DF | .~.~ Coils, anti-eddy-current |
| 35 MS | DF | .~.~ Materials, stock and screen rooms |
| 35 TS | DF | .~.~ Radio tube shields |
| 37 | DF | UNDERGROUND |
| 38 | DF | .~ Distributing and/or combined with overhead |
| 39 | DF | .~ Street, sidewalk, gutter or curb structure |
| 40 R | DF | OVERHEAD |
| 41 | DF | .~ With messenger cable |
| 42 | DF | .~ With conductor vibration damping means |
| 43 | DF | .~ Distributing and/or plural point support |
| 44 | DF | .~ With connector or wire fanning arrangements |
| 45 R | DF | .~ Towers, poles or posts |
| 45 TD | DF | .~.~ Tension devices |
| 40 CC | DF | .~ Ground clamps and cable clips |
| 40 TD | DF | .~ Tension devices |
| 46 | DF | HANDLES |
| 47 | DF | COMBINED FLUID CONDUIT AND ELECTRICAL CONDUCTOR |
| 48 | DF | WALL MOUNTED CONDUITS AND/OR HOUSINGS |
| 49 | DF | .~ Plural outlet and/or conduit |
| 50 | DF | BOXES AND HOUSINGS |
| 50.5 | DF | .~ Hermetic sealed envelope type |
| 50.51 | DF | .~.~ With covering or casing for envelope |
| 50.52 | DF | .~.~ With electrical connector |
| 50.53 | DF | .~.~.~ Envelope portion forms connector |
| 50.54 | DF | .~.~ With mounting means for a device within envelope |
| 50.55 | DF | .~.~ Hollow lead surrounding another lead (e.g., concentric type) |
| 50.56 | DF | .~.~ Lead-in insulated from metal wall |
| 50.57 | DF | .~.~ Stem or sealing disk attached to envelope neck |
| 50.58 | DF | .~.~.~ By fused-type seal |
| 50.59 | DF | .~.~ With shield for lead-in seal or between the lead-in conductors |
| 50.6 | DF | .~.~ Plural lead-in |
| 50.61 | DF | .~.~ With bonded seal for conductive member (e.g., glass to metal) |
| 50.62 | DF | .~.~.~ With cement or plastic |
| 50.63 | DF | .~.~.~ Metal disk or ring-type seal |
| 50.64 | DF | .~.~.~ Foil or flat lead-in |
| 51 | DF | .~ With grounding means |
| 52.1 | DF | .~ With electric device or mounting means therefor |
| 52.2 | DF | .~.~ Potted or encapsulated |
| 52.3 | DF | .~.~ Sealed |
| 52.4 | DF | .~.~.~ Flat housing for electronic device (e.g., flat pack, dual-in-line package) |
| 52.5 | DF | .~.~.~ Header, mounting stud, or can-type housing for semiconductor or crystal |
| 52.6 | DF | .~.~.~ Pellet type housing |
| 53 | DF | .~.~ Plug receptacle or wall switch type |
| 54 | DF | .~.~.~ With fixture coupling or mounting means |
| 55 | DF | .~.~.~ Unitary with face plate |
| 56 | DF | .~.~.~.~ External |
| 57 | DF | .~.~.~ Adjustable |
| 58 | DF | .~.~.~ With box or housing mounting means |
| 59 | DF | .~.~ With connectors |
| 60 | DF | .~.~.~ Cable or conduit terminal casings |
| 61 | DF | .~.~ Fixtures coupling or mounting means |
| 62 | DF | .~.~.~ Stud or nipple |
| 63 | DF | .~.~.~.~ With box supporting means |
| 64 | DF | .~.~.~.~ With conduit or cable coupling means |
| 65 R | DF | .~ With conduit or cable opening, coupling means or hole closures |
| 65 SS | DF | .~.~ Sealed stuffing-gland type |
| 65 G | DF | .~.~ Grommet type |
| 66 | DF | COVERS OR FACE PLATES |
| 67 | DF | .~ With closure for face plate opening |
| 68.1 | DF | CONDUITS, CABLES OR CONDUCTORS |
| 68.2 | DF | .~ Bus bars or bus ducts (Residual) |
| 68.3 | DF | .~ Single duct conduits |
| 250 | DF | .~ Preformed panel circuit arrangement (e.g., printed circuit) |
| 251 | DF | .~.~ With encapsulated wire |
| 252 | DF | .~.~ With cooling means |
| 253 | DF | .~.~ Micropanel |
| 254 | DF | .~.~ Convertible shape (e.g., flexible) or circuit (e.g., breadboard) |
| 255 | DF | .~.~ With particular substrate or support structure |
| 256 | DF | .~.~ With particular material |
| 257 | DF | .~.~.~ Conducting (e.g., ink) |
| 258 | DF | .~.~.~ Insulating |
| 259 | DF | .~.~.~ Adhesive/bonding |
| 260 | DF | .~.~ With electrical device |
| 261 | DF | .~.~ With particular conductive connection (e.g., crossover) |
| 262 | DF | .~.~.~ Feedthrough |
| 263 | DF | .~.~.~.~ With solder |
| 264 | DF | .~.~.~.~ Voidless (e.g., solid) |
| 265 | DF | .~.~.~.~.~ Preform in hole |
| 266 | DF | .~.~.~.~ Hollow (e.g., plated cylindrical hole) |
| 267 | DF | .~.~.~ Termination post |
| 268 | DF | .~.~ With single conductive plane (e.g., tape, cable) |
| 69 | DF | .~ Extensible |
| 70 R | DF | .~ Combined |
| 71 R | DF | .~.~ Branched |
| 72 R | DF | .~.~.~ Multi-duct conduit and/or plural branch |
| 72 A | DF | .~.~.~.~ Wire harness |
| 72 B | DF | .~.~.~.~ Bus bars |
| 72 C | DF | .~.~.~.~ Casing, moldings |
| 72 TR | DF | .~.~.~.~ Ribbon type |
| 71 B | DF | .~.~.~ Bus bars |
| 71 C | DF | .~.~.~ Coaxial |
| 73.1 | DF | .~.~ With joint or end structure conductive stress distributing means |
| 74 R | DF | .~.~ With end structure |
| 75 R | DF | .~.~.~ With joint |
| 75 B | DF | .~.~.~.~ Bootleg |
| 75 D | DF | .~.~.~.~ With detachable joint (e.g., potheads) |
| 75 F | DF | .~.~.~.~ Flexible spring type |
| 75 C | DF | .~.~.~.~ Coaxial |
| 76 | DF | .~.~.~ Plastic filled |
| 77 R | DF | .~.~.~ Sealing |
| 77 S | DF | .~.~.~.~ Spark plugs |
| 78 | DF | .~.~.~ With grounding means |
| 79 | DF | .~.~.~ With supporting means |
| 80 | DF | .~.~.~ With insulator skirts |
| 81 | DF | .~.~.~ Elbow or hood outlet type |
| 82 | DF | .~.~.~ End cap outlet type |
| 83 | DF | .~.~.~ Lining thimble |
| 74 A | DF | .~.~.~ Insulating cap or sleeve |
| 84 R | DF | .~.~ With joints |
| 85 | DF | .~.~.~ Axially insulated joint sleeve sections |
| 86 | DF | .~.~.~ Angularly movable or adjustable |
| 87 | DF | .~.~.~ Angular |
| 88 R | DF | .~.~.~ Plural conductor and/or duct |
| 88 B | DF | .~.~.~.~ Bus bars |
| 88 C | DF | .~.~.~.~ Coaxial |
| 88 S | DF | .~.~.~.~ Separable |
| 89 | DF | .~.~.~ Radially spread or flanged sheath or conduit |
| 90 | DF | .~.~.~ Stranded conductor |
| 91 | DF | .~.~.~ Divided joint sleeves |
| 92 | DF | .~.~.~.~ Longitudinally |
| 93 | DF | .~.~.~ Sleeve and end cap-type casing |
| 94 R | DF | .~.~.~ Bare-conductor |
| 94 S | DF | .~.~.~.~ Separable |
| 84 C | DF | .~.~.~ Crimped |
| 84 S | DF | .~.~.~ Separable |
| 70 S | DF | .~.~ Submarine repeater housings |
| 70 B | DF | .~.~ Bus bars |
| 70 C | DF | .~.~ Conduits or strips |
| 70 A | DF | .~.~ Aerial cable |
| 95 | DF | .~ Plural duct |
| 96 | DF | .~.~ Embedded conduit-ducts or conductors |
| 97 | DF | .~.~ Grooves or channels |
| 98 | DF | .~ With embedded conduit-duct or conductor |
| 99 R | DF | .~ With interior conductor or cable supports |
| 100 | DF | .~.~ Vertical conductor or cable |
| 99 B | DF | .~.~ Bus bars |
| 99 E | DF | .~.~ Expansion |
| 101 | DF | .~ Removable wall |
| 101.5 | DF | .~ Buoyant |
| 102 R | DF | .~ Conductive armor or sheath |
| 103 | DF | .~.~ Plural individually sheathed or armored conductors |
| 104 | DF | .~.~.~ Embedded in shield |
| 105 R | DF | .~.~ Plural, insulated |
| 105 SC | DF | .~.~.~ Semiconducting |
| 105 B | DF | .~.~.~ Segmental |
| 106 R | DF | .~.~ Plural, conductively contacting or composite |
| 106 SC | DF | .~.~.~ Semiconducting |
| 106 D | DF | .~.~.~ Corrugated |
| 107 | DF | .~.~ Protected by nonconductive layer |
| 108 | DF | .~.~ Spirally applied |
| 109 | DF | .~.~.~ Overlapping or interlocking |
| 102 A | DF | .~.~ Alloys |
| 102 SC | DF | .~.~ Semiconducting |
| 102 C | DF | .~.~ Sheath coated |
| 102 SP | DF | .~.~ Strip, type, perforated, slotted |
| 102 P | DF | .~.~ Powdered insulation |
| 102 D | DF | .~.~ Corrugated |
| 102 E | DF | .~.~ Rope |
| 110 R | DF | .~ Insulated |
| 111 | DF | .~.~ With beads or disc |
| 112 | DF | .~.~ With identifying means |
| 113 R | DF | .~.~ Multiple conductor |
| 114 R | DF | .~.~.~ Split conductor |
| 114 S | DF | .~.~.~.~ Segmental reentrant |
| 115 | DF | .~.~.~ Dissimilar or auxiliary conducting elements |
| 116 | DF | .~.~.~ With filler insulation |
| 117 R | DF | .~.~.~ Assemblies of noncircular section |
| 117 F | DF | .~.~.~.~ Flat or ribbon type |
| 117 FF | DF | .~.~.~.~ Conductor itself is flat |
| 117 M | DF | .~.~.~.~ Mesh |
| 117 AS | DF | .~.~.~.~ Air-spaced |
| 117 A | DF | .~.~.~.~ Adhesive |
| 113 A | DF | .~.~.~ Radially compressed |
| 113 AS | DF | .~.~.~ Air-spaced |
| 113 C | DF | .~.~.~ Insulating core |
| 118 | DF | .~.~ With powdered or granular material |
| 119 R | DF | .~.~ Composite or noncircular strand section |
| 119 C | DF | .~.~.~ Coated, compositions |
| 120 R | DF | .~.~ Plural or impregnated layers |
| 121 R | DF | .~.~.~ Fibrous or fabric with plastic or coating materials |
| 121 A | DF | .~.~.~.~ Flame, weather or mold proof |
| 121 B | DF | .~.~.~.~ Cellulose |
| 121 AR | DF | .~.~.~.~ Rubber |
| 121 SR | DF | .~.~.~.~ Synthetic resin |
| 122 R | DF | .~.~.~ Fibrous or fabric |
| 122 G | DF | .~.~.~.~ Glass |
| 122 C | DF | .~.~.~.~ Coated |
| 120 C | DF | .~.~.~ Coated or impregnated |
| 120 FP | DF | .~.~.~ Fluid-type cable paper |
| 120 SC | DF | .~.~.~ Semiconducting |
| 120 AR | DF | .~.~.~ Rubber |
| 120 SR | DF | .~.~.~ Synthetic resin |
| 124 R | DF | .~.~ Fibrous or fabric |
| 124 G | DF | .~.~.~ Mineral-glass |
| 124 GC | DF | .~.~.~ Mineral-glass, coated |
| 110 A | DF | .~.~ Oxide |
| 110 P | DF | .~.~ Cellulose |
| 110 AR | DF | .~.~ Rubber |
| 110 SR | DF | .~.~ Synthetic resin |
| 110 SY | DF | .~.~ Styrene |
| 110 B | DF | .~.~ Isobutylent |
| 110 N | DF | .~.~ Polyamide (Nylon) |
| 110 PM | DF | .~.~ Polyethylene (including "Mylar") |
| 110 D | DF | .~.~ Dacron |
| 110 V | DF | .~.~ Vinyl |
| 110 FC | DF | .~.~ Fluorocarbons (teflon, Kel-f, FEP-Teflon) |
| 110 S | DF | .~.~ Silicones |
| 110 F | DF | .~.~ Foam |
| 110 E | DF | .~.~ Epoxy |
| 125.1 | DF | .~ Superconductors |
| 126.1 | DF | .~ Conductor structure (nonsuperconductive) |
| 126.2 | DF | .~.~ Composite |
| 126.3 | DF | .~.~ Corrugated or slotted |
| 126.4 | DF | .~.~ Metal coated on insulation |
| 127 | DF | .~.~ Corona prevention |
| 128.1 | DF | .~.~ Plural strand |
| 128.2 | DF | .~.~.~ Bundle conductors |
| 129 R | DF | .~.~.~ Assemblies of noncircular section |
| 129 B | DF | .~.~.~.~ Bus bars |
| 129 S | DF | .~.~.~.~ Segmental, reentrant |
| 130 | DF | .~.~.~ Annular |
| 131 R | DF | .~.~.~.~ With wall support |
| 131 A | DF | .~.~.~.~.~ Insulating core |
| 131 B | DF | .~.~.~.~.~ Synthetic, coated |
| 133 R | DF | .~.~ Noncircular strand section |
| 133 B | DF | .~.~.~ Bus bars |
| 135 | DF | .~ Accessories |
| 136 | DF | .~.~ Anti-abrasion devices |
| 137 R | DF | INSULATORS |
| 138 R | DF | .~ Special application |
| 138 A | DF | .~.~ Antennas |
| 138 C | DF | .~.~ Compositions |
| 138 S | DF | .~.~ Spark plugs |
| 138 B | DF | .~.~ Pull chains |
| 138 D | DF | .~.~ Studs, rods, and joints |
| 138 E | DF | .~.~ Slot liners and spacers |
| 138 F | DF | .~.~ Terminal covers |
| 138 G | DF | .~.~ Component mounting pads, spacers and holders |
| 138 H | DF | .~.~ Neon tube type |
| 138 J | DF | .~.~ Resistor or heater type |
| 139 | DF | .~ Combined |
| 140 R | DF | .~.~ With conductive arcing or stress distributing means |
| 141 R | DF | .~.~.~ Strings or stacks |
| 141 C | DF | .~.~.~.~ Coated |
| 142 | DF | .~.~.~ Bushing type |
| 143 | DF | .~.~.~.~ Condenser type |
| 144 | DF | .~.~.~ Arcing or grading devices |
| 140 C | DF | .~.~.~ Coated |
| 140 H | DF | .~.~.~ Hood type |
| 140 S | DF | .~.~.~ Strain type |
| 140 CR | DF | .~.~.~ Corona ring |
| 145 | DF | .~.~ With connector |
| 146 | DF | .~ Mid-line spacers |
| 147 | DF | .~.~ Cross-over |
| 148 | DF | .~ Multiple insulator assemblies |
| 149 R | DF | .~.~ Multiple conductor |
| 149 B | DF | .~.~.~ Bus bars |
| 150 | DF | .~.~ Strings and stacks |
| 151 | DF | .~ Through wall or plate |
| 152 R | DF | .~.~ Bushing type |
| 153 R | DF | .~.~.~ Opposed wall engaging means |
| 153 A | DF | .~.~.~.~ Antennas |
| 153 G | DF | .~.~.~.~ Grommets |
| 152 A | DF | .~.~.~ Antennas |
| 152 E | DF | .~.~.~ Electric space discharge device |
| 152 S | DF | .~.~.~ Spark plugs |
| 152 G | DF | .~.~.~ Grommets or tubes |
| 152 GM | DF | .~.~.~ Glass-to-metal seal |
| 154 | DF | .~ Insulator and conductor embracing holder |
| 155 | DF | .~.~ Divided insulator |
| 156 | DF | .~ Divided insulator |
| 157 | DF | .~.~ Aligned through aperture |
| 158 R | DF | .~ With insulator-supporting or attaching means |
| 159 | DF | .~.~ Insulated nail or staple type |
| 160 | DF | .~.~ Strand engaging suspension means |
| 161 R | DF | .~.~ Adjustably or movably mounted |
| 161 F | DF | .~.~.~ Fence post insulators |
| 162 | DF | .~.~ Double arm |
| 163 R | DF | .~.~ Support and/or insulator embracing or clamping |
| 163 F | DF | .~.~.~ Fence post insulators |
| 164 | DF | .~.~ Support penetrating |
| 165 | DF | .~.~.~ Penetrating element socketed in insulator |
| 166 R | DF | .~.~.~ Through aperture, penetrating element clamped |
| 166 S | DF | .~.~.~.~ Stand-off insulators |
| 158 F | DF | .~.~ Fence post insulators |
| 167 | DF | .~ With conductor receiving aperture or bushing type |
| 168 | DF | .~ With conductor holding means |
| 169 | DF | .~.~ Fitting or terminal type |
| 170 | DF | .~.~.~ Hooks |
| 171 | DF | .~.~.~ Special conductor form |
| 172 | DF | .~.~ Insulator embracing |
| 173 | DF | .~.~.~ Tie wires |
| 174 | DF | .~.~ Insulator structure |
| 175 | DF | .~.~.~ Self-retaining |
| 176 | DF | .~ With terminal elements |
| 177 | DF | .~.~ Plural |
| 178 | DF | .~.~.~ Multi-part, sectional or composite insulator |
| 179 | DF | .~.~.~.~ Protected rod type |
| 180 | DF | .~.~.~.~ Pin and opposed overlapping terminal |
| 181 | DF | .~.~.~ With insulated reinforcing or interlocking element |
| 182 | DF | .~.~.~ Cap and pin |
| 183 | DF | .~.~.~ Overlapping |
| 184 | DF | .~.~.~.~ Interlinking |
| 185 | DF | .~.~.~.~ Pin and opposed terminal |
| 186 | DF | .~.~.~ Caps |
| 187 | DF | .~.~ Ventilating |
| 188 | DF | .~.~ Cap type |
| 189 | DF | .~.~.~ Plastic material adhered |
| 190 | DF | .~.~.~ Divided cap |
| 191 | DF | .~.~.~ Clamps or clasps |
| 192 | DF | .~.~.~ Rings or wedges |
| 193 | DF | .~.~.~ Screw or bayonet |
| 194 | DF | .~.~ Pin type |
| 195 | DF | .~.~.~ Multi-part insulators |
| 196 | DF | .~.~.~ Plastic material adhered |
| 197 | DF | .~.~.~ Clamps or clasps |
| 198 | DF | .~.~.~ Rings or wedges |
| 199 | DF | .~.~.~ Expanded |
| 200 | DF | .~.~.~ With thimble in socket |
| 201 | DF | .~.~.~ Through pin |
| 202 | DF | .~.~.~ Screw or bayonet type |
| 203 | DF | .~.~.~.~ Strand thread |
| 204 | DF | .~.~.~.~ Sheet material thread |
| 205 | DF | .~.~.~.~ Soft yielding material pin |
| 206 | DF | .~.~.~.~ Sockets |
| 207 | DF | .~.~ Link or clevis |
| 208 | DF | .~ Link type |
| 209 | DF | .~ Sectional, multi-part, composite, or coated |
| 210 | DF | .~.~ Pin socket type |
| 211 | DF | .~ With moisture or dirt removing or shedding |
| 212 | DF | .~ Surface configuration |
| 137 A | DF | .~ Coated |
| 137 B | DF | .~ Compositions |
| ****************************** | ||
| DIGESTS | ||
| ****************************** | ||
| DIG 1 | DD | Anti-tracking |
| DIG 2 | DD | Ballasts |
| DIG 7 | DD | Sodium conductors, connectors, etc. |
| DIG 8 | DD | Shrinkable tubes, etc. |
| DIG 9 | DD | Pull-out cabinet or drawer with retractable cable |
| DIG 10 | DD | Bushings with current transformers |
| DIG 11 | DD | Zipper tubes |
| DIG 12 | DD | Helical preforms |