US PATENT SUBCLASS 254 / 41
.~ Screw

Current as of: June, 1999
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254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

40  DF  PRINTER'S QUOINS {2}
41.~ Screw

DEFINITION

Classification: 254/41

Screw:

(under subclass 40) Printer's quoin expanded directly by screw mechanism.