US PATENT SUBCLASS 411 / 488
.~.~ Flat-sided shank


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}
487  DF  .~ Shank or penetrating end structure {5}
488.~.~ Flat-sided shank {1}
489  DF  .~.~.~> Tapered


DEFINITION

Classification: 411/488

Flat-sided shank:

(under subclass 487) Subject matter wherein the shank is formed with a longitudinally extending planar surface.