US PATENT SUBCLASS 470 / 52
.~.~.~ Screw fastener

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

48  DF  APPARATUS FOR ASSEMBLING OR DISASSEMBLING FASTENER WITH ELEMENT {1}
49  DF  .~ Headed fastener with element, e.g., bolt with nut and washer {2}
51  DF  .~.~ Attaching cap to fastener {5}
52.~.~.~ Screw fastener

DEFINITION

Classification: 470/52

Screw fastener:

(under subclass 51) Subject matter wherein the device comprises an externally threaded fastener having threads which converge to a point on an end of the fastener.