US PATENT SUBCLASS 148 / 907
.~ Threaded or headed fastener

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

902  DF  HAVING PORTIONS OF DIFFERING METALLURGICAL PROPERTIES OR CHARACTERISTICS {8}
907.~ Threaded or headed fastener

DEFINITION

Classification: 148/907

Threaded or headed fastener:

(under subclass 902) Art collection wherein the stock material is a threaded or headed fastener, e.g., bolt, nut, nail etc.