US PATENT SUBCLASS 420 / 49
.~.~.~ Copper containing
Current as of:
June, 1999
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420 /
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ALLOYS OR METALLIC COMPOSITIONS
8
DF
FERROUS (I.E., IRON BASE)
{24}
34
DF
.~ Nine percent or more chromium containing {14}
43
DF
.~.~ Eight percent or more nickel containing {6}
49
.~.~.~ Copper containing
DEFINITION
Classification: 420/49
Copper containing:
(under subclass 43) Alloy or metallic composition which additionally contains copper.
