US PATENT SUBCLASS 148 / 432
.~ Copper base

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

400  DF  STOCK {20}
432.~ Copper base {4}
433  DF  .~.~> Tin containing
434  DF  .~.~> Zinc containing
435  DF  .~.~> Nickel containing
436  DF  .~.~> Aluminum containing

DEFINITION

Classification: 148/432

Copper base:

(under subclass 400) Stock material which contains over 50 percent of copper by weight.