US PATENT SUBCLASS 436 / 78
.~ Presence of a component of steel

Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

73  DF  METAL OR METAL CONTAINING {9}
78.~ Presence of a component of steel

DEFINITION

Classification: 436/78

Presence of a component of steel:

(under subclass 73) Processes or compositions for the analysis of components of iron carbon alloys.

(1) Note. It is conclusively presumed that any composition denominated steel will come within the definition of this subclass.