US PATENT SUBCLASS 411 / 929.1
.~.~ Coil spring

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}
929.1.~.~ Coil spring

DEFINITION

Classification: 411/929.1

Coil Spring:

Art collection under art collection 929 in which a nut or bolt are provided with a coil spring to lock the nut to the bolt.