US PATENT SUBCLASS 411 / 957
.~.~ Biting tooth

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

955  DF  LOCKED BOLTHEAD OR NUT {7}
956  DF  .~ Automatic base clutch {4}
957.~.~ Biting tooth {2}
958  DF  .~.~.~> Coiled washer
959  DF  .~.~.~> Bolt- or nut-carried

DEFINITION

Classification: 411/957

Biting tooth:

Art collection under art collection 956 wherein the gripping is affected by one or more projection deforming the surface of the substructure or the device.