US PATENT SUBCLASS 411 / 445
.~.~ Attached end-to-end

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

439  DF  IMPACT DRIVEN FASTENER, E.G., NAIL, SPIKE, TACK, ETC. {13}
442  DF  .~ Plural attached fasteners {3}
445.~.~ Attached end-to-end

DEFINITION

Classification: 411/445

Attached end-to-end:

(under subclass 442) Subject matter wherein the fasteners are attached such that an impact receiving end of a fastener is connected to a penetrating end of an adjacent fastener.