US PATENT SUBCLASS 420 / 71
.~.~ Processes


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

8  DF  FERROUS (I.E., IRON BASE) {24}
34  DF  .~ Nine percent or more chromium containing {14}
71.~.~ Processes


DEFINITION

Classification: 420/71

Processes:

(under subclass 34) Processes of producing alloys or metallic composition.

(1) Note. While this subclass provides for processes of producing alloys under subclass 34 not specifically provided in the indents above, e.g., ferrochrome, it is also employed as a collecting point for cross-references to processes of general utility in preparing a wide range of alloys classified in different subclasses under subclass 34.