US PATENT SUBCLASS 420 / 88
.~.~ Processes of making or treating alloy containing over 0.04 percent phosphorus

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

8  DF  FERROUS (I.E., IRON BASE) {24}
87  DF  .~ Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability {1}
88.~.~ Processes of making or treating alloy containing over 0.04 percent phosphorus

DEFINITION

Classification: 420/88

Processes of making or treating alloy containing over 0.04 percent phosphorus:

(under subclass 87) Processes wherein an alloy containing over 0.04 Percent phosphorus is made or treated.