US PATENT SUBCLASS 411 / 939
.~.~ Longitudinal 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}
929  DF  .~ Thread lock {12}
939.~.~ Longitudinal key

DEFINITION

Classification: 411/939

Longitudinal key:

Art collection under art collection 929 in which a special

structure is provided in the form of a key having its locking portion extending longitudinally of the bolt and biting or bending against the thread.