US PATENT SUBCLASS 470 / 139
.~.~.~ Bolt blank making

Current as of: June, 1999
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470 /   HD   THREADED, HEADED FASTENER, OR WASHER MAKING: PROCESS AND APPARATUS

110  DF  APPARATUS FOR MAKING HEADED FASTENER, E.G., NAIL, RIVET, ETC. {13}
137  DF  .~ Header means {1}
138  DF  .~.~ And laterally movable carrier {1}
139.~.~.~ Bolt blank making

DEFINITION

Classification: 470/139

Bolt blank making:

(under subclass 137) Subject matter wherein the work material being formed is an intermediate article which is to undergo further forming operations resulting in a externally headed fastener structured to cooperate with and be secured by a internally threaded fastener.