US PATENT SUBCLASS 470 / 163
.~ Lock washer

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

162  DF  APPARATUS FOR MAKING WASHER {1}
163.~ Lock washer

DEFINITION

Classification: 470/163

Lock washer:

(under subclass 162) Subject matter wherein the article is provided with means to secure same to another bolt, nut, similar fastener or other structure.