US PATENT SUBCLASS 411 / 945
.~ Cross key

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

924  DF  COUPLED NUT AND BOLT {13}
945.~ Cross key {1}
946  DF  .~.~> Spring-seated

DEFINITION

Classification: 411/945

Cross key:

Art collection under are collection 924 in which the nut and bolt are lock together by a key which has its locking position lying transversely of the bolt.