US PATENT SUBCLASS 420 / 85
.~.~ Processes

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

8  DF  FERROUS (I.E., IRON BASE) {24}
84  DF  .~ Lead, bismuth, selenium, tellurium or calcium containing {1}
85.~.~ Processes {1}
86  DF  .~.~.~> Adding lead

DEFINITION

Classification: 420/85

Processes:

(under subclass 84) Processes of incorporating one or more additional element under subclass 84 into a ferrous alloy.