US PATENT SUBCLASS 420 / 103
.~ Over 0.1 percent aluminum containing, but less than 4 percent

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

8  DF  FERROUS (I.E., IRON BASE) {24}
103.~ Over 0.1 percent aluminum containing, but less than 4 percent

DEFINITION

Classification: 420/103

Over 0.1 percent aluminum containing, but less than 4 percent:

(under subclass 8) Alloy or metallic composition which additionally contains more that 0.1 percent aluminum.

(1) Note. Due to schedule superiority, alloys containing 4 percent or more aluminum are classified above in subclasses 77+. Patents classified in subclasses 77+ above are not cross referenced to this subclass unless there is a positive disclosure of an alloy containing less that 4 percent aluminum.