US PATENT SUBCLASS 148 / 908
.~ Spring

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

902  DF  HAVING PORTIONS OF DIFFERING METALLURGICAL PROPERTIES OR CHARACTERISTICS {8}
908.~ Spring

DEFINITION

Classification: 148/908

Spring:

(under subclass 902) Art collection wherein the stock material is a spring, e.g., coil, leaf, etc.