US PATENT SUBCLASS 140 / 71 B
.~ Vacuum tube grids


Current as of: June, 1999
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140 /   HD   WIREWORKING

71 R  DF  ARTICLE MAKING OR FORMING {22}
71 B.~ Vacuum tube grids

Unofficial Alpha Subclasses: R A B C

DEFINITION

Classification: 140/71

Making articles from wire stock not classifiable otherwise.

SEE OR SEARCH CLASS

57, Textiles: Spinning, Twisting, and Twining, appropriate subclasses for wire-rope and cord making.

72, Metal Deforming, for mere metal shaping.

156, Adhesive Bonding and Miscellaneous Chemical Manufacture,

47+, as the generic home for processes of making indefinite length electrical conductors not elsewhere provided for.

227, Elongated-Member-Driving Apparatus,

82+, for combined apparatus for making and driving a member, e.g., nail.

242, Winding, Tensioning, or Guiding, 430+, for permanently winding elongated material; e.g., wire, on a core to make certain articles; subclasses 360+ for forming loops usually of wire into a storage coil, and subclasses 470+ for winding wire onto a storage spool.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

209+, for electromagnets.

336, Inductor Devices, appropriate subclasses for the structure of inductive devices (e.g., transformers and inductive regulators).

470, Threaded, Headed Fastener, or Washer Making: Process and Apparatus,

121+,.