US PATENT SUBCLASS 420 / 415
ALKALINE EARTH METAL BASE

Current as of: June, 1999
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420 /   HD   ALLOYS OR METALLIC COMPOSITIONS

415ALKALINE EARTH METAL BASE

DEFINITION

Classification: 420/415

Alkaline earth metal base:

(under the class definition) Alloy, or metallic composition which contains over 50 percent of calcium, over 50 percent of strontium, or over 50 percent of barium.