US PATENT SUBCLASS 420 / 2
.~ Actinide base; singly or in combination

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

1  DF  RADIOACTIVE {5}
2.~ Actinide base; singly or in combination {1}
3  DF  .~.~> Uranium base

DEFINITION

Classification: 420/2

Actinide base singly or in combination:

(under subclass 1) Alloy or metallic composition in which contains over 50 percent of a single metal of atomic number 89 to 103 inclusive, or wherein the total of all these metals taken together is over 50 percent of weight of the total alloy or metallic composition.