US PATENT SUBCLASS 420 / 400
ALKALI METAL BASE
Current as of:
June, 1999
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420 /
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ALLOYS OR METALLIC COMPOSITIONS
400
ALKALI METAL BASE
DEFINITION
Classification: 420/400
ALKALI METAL BASE:
(under the class definition) Alloy, or metallic composition s which contains over 50 percent of weight of a single metal selected from Lithium, Sodium, Potassium, Rubidium, or Cesium.
