US PATENT SUBCLASS 470 / 30
.~.~.~.~ Having prong

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

1  DF  PROCESS {5}
27  DF  .~ Making headed fastener, e.g., rivet or nail, etc. {2}
28  DF  .~.~ Rivet type {3}
29  DF  .~.~.~ Hollow type {1}
30.~.~.~.~ Having prong

DEFINITION

Classification: 470/30

Having prong:

(under subclass 29) Subject matter wherein the fastener is further provided with a portion structured as a penetrating end to allow the fastener to be used as impact driven fastener.