US PATENT SUBCLASS 148 / 437
.~ Aluminum base

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

400  DF  STOCK {20}
437.~ Aluminum base {2}
438  DF  .~.~> Copper containing {1}
440  DF  .~.~> Magnesium containing

DEFINITION

Classification: 148/437

Aluminum base:

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