US PATENT SUBCLASS 470 / 42
.~.~ Lock-washer 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}
41  DF  .~ Making washer {1}
42.~.~ Lock-washer type

DEFINITION

Classification: 470/42

Lock-washer type:

(under subclass 41) Subject matter wherein the fastener is provided with means to secure same to another structure.