US PATENT SUBCLASS 470 / 14
.~.~.~.~ Hollow bolt type

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}
14.~.~.~.~ Hollow bolt type {1}
15  DF  .~.~.~.~.~> And prong

DEFINITION

Classification: 470/14

Hollow bolt type:

(under subclass 12) Subject matter wherein the fastener is provided with a longitudinally extending bore or cavity.