US PATENT SUBCLASS 411 / 485
.~ Hook head


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}
485.~ Hook head


DEFINITION

Classification: 411/485

Hook head:

(under subclass 439) Subject matter wherein the impact receiving surface includes an angularly shaped portion adapted to be grasped or to attach an member thereto.