US PATENT SUBCLASS 148 / 420
.~ Magnesium base

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

400  DF  STOCK {20}
420.~ Magnesium base

DEFINITION

Classification: 148/420

Magnesium base:

(under subclass 400) Stock material which contains over 50 percent of magnesium.