US Patent Class 280
LAND VEHICLES-- Main Headings



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Current as of: June, 1999
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CLASS NOTES
1  DF  MISCELLANEOUS
827  DF  SIMULATIONS OF THE VELOCIPEDE TYPE {3}
1.5  DF  WITH MEANS FOR ENGAGING BODY OF WALKING ATTENDANT
3  DF  WHEELED PROPELLED
4  DF  HOSE AND LADDER
830  DF  TANK OR BOILER {9}
5.2  DF  STEP OR ABUTMENT ASCENDING TYPE VEHICLE {6}
5.5  DF  SUSPENSION MODIFICATION ENACTED DURING TRAVEL (I.E., ACTIVE SUSPENSION CONTROL) {9}
6.15  DF  BODY ELEVATION OR TILT {4}
7.1  DF  CONVERTIBLE (I.E., VELOCIPEDE TYPE) {3}
8  DF  WHEELED AND RUNNER {1}
841  DF  SKATES {7}
809  DF  SKI OR SKATE APPLIANCE OR ATTACHMENT {11}
845  DF  RUNNER VEHICLE {22}
28.5  DF  WHEEL SUBSTITUTE
29  DF  WHEELED {21}
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CROSS-REFERENCE ART COLLECTIONS
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900  DF  RUNNER VEHICLE ATTACHMENTS
901  DF  ADAPTATION ON NONSPECIALIZED VEHICLES TO SEMITRAILER TRACTORS
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FOREIGN ART COLLECTIONS
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FOR 100  DF  BODY-LEVELING DEVICES (280/840) {3}
*  DF  WHEELED {1}
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DIGESTS
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DIG 1  DF  Load responsive (leveling of vehicle)
DIG 2  DF  Wheel supports for outboard motors
DIG 3  DF  Wheeled shopping bag
DIG 4  DF  Grocery store cart
DIG 5  DF  Motorized golf carts
DIG 6  DF  Wheeled golf club carriers
DIG 7  DF  Air bag rollers
DIG 8  DF  Separable body or container-type semitrailers
DIG 9  DF  Occupant-steered trailers
DIG 10  DF  Stair climbing chairs
DIG 11  DF  Walking attendant steered trailers
DIG 12  DF  Clamp-type ski bindings having plural diverse axes or clamps
DIG 13  DF  Ski binding controlled by skier position or by remote control
DIG 14  DF  Tractor-trailer backing connections