US PATENT SUBCLASS 148 / 906
.~ Roller bearing element

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

902  DF  HAVING PORTIONS OF DIFFERING METALLURGICAL PROPERTIES OR CHARACTERISTICS {8}
906.~ Roller bearing element

DEFINITION

Classification: 148/906

Roller bearing element:

(under subclass 902) Art collection wherein the stock material is a roller bearing element e.g., race, ball, roller, etc.