US PATENT SUBCLASS 411 / 471
.~.~ Each prong bevelled from a single side toward its opposite side

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}
457  DF  .~ Multiple prong, e.g., nailing plate, staple, etc. {8}
471.~.~ Each prong bevelled from a single side toward its opposite side {1}
472  DF  .~.~.~> Bevel located on outerside of prong

DEFINITION

Classification: 411/471

Each prong bevelled from a single side toward its opposite side:

(under subclass 457) Subject matter wherein each of the penetrating ends includes a first side surface which lies substantially in a single plane and extends to the extremity of a penetrating point and includes a second side surface opposing said first surface and having a tapered portion thereof adjacent the penetrating point being tapered inwardly in the direction of said point and terminating at the extremity thereof.