US PATENT SUBCLASS 470 / 31
.~.~.~ Formed by extrusion

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
31.~.~.~ Formed by extrusion

DEFINITION

Classification: 470/31

Formed by extrusion:

(under subclass 28) Subject matter having a step of shaping by forcing the fastener through a die.