US PATENT SUBCLASS 411 / 971
.~.~ And side lock

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}
965  DF  .~ With retainer {6}
971.~.~ And side lock

DEFINITION

Classification: 411/971

And side lock:

Art collection under art collection 965 wherein a side surface of the device is locked to prevent rotation.