US PATENT SUBCLASS 411 / 382
.~.~ Having telltale bore

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

378  DF  EXTERNALLY THREADED FASTENER ELEMENT, E.G., BOLT, SCREW, ETC. {16}
379  DF  .~ Stay bolt {2}
382.~.~ Having telltale bore

DEFINITION

Classification: 411/382

Having telltale bore:

(under subclass 379) Subject matter wherein the fastening

means is provided with a longitudinal extending cavity.