US PATENT SUBCLASS 470 / 12
.~.~.~ Having specific configuration

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.~.~.~ Having specific configuration {4}
13  DF  .~.~.~.~> U-frame type
14  DF  .~.~.~.~> Hollow bolt type {1}
16  DF  .~.~.~.~> Formed by extrusion
17  DF  .~.~.~.~> Formed by heat treatment

DEFINITION

Classification: 470/12

Having specific configuration:

(under subclass 11) Subject matter wherein significance is attributed to the shape of the fastener.