US PATENT SUBCLASS 148 / 332
.~.~ Copper containing

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

400  DF  STOCK {20}
320  DF  .~ Ferrous (i.e., iron base) {10}
332.~.~ Copper containing

DEFINITION

Classification: 148/332

Copper containing:

(under subclass 320) Stock material which additionally contains copper.