US PATENT SUBCLASS 470 / 16
.~.~.~.~ Formed by extrusion

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

1  DF  PROCESS {5}
8  DF  .~ Making externally threaded fastener, e.g., screw or bolt {2}
11  DF  .~.~ Bolt {1}
12  DF  .~.~.~ Having specific configuration {4}
16.~.~.~.~ Formed by extrusion

DEFINITION

Classification: 470/16

Formed by extrusion:

(under subclass 11) Subject matter having a step of shaping by forcing the fastener through a die.