US PATENT SUBCLASS 420 / 114
.~.~ Tungsten containing

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


420 /   HD   ALLOYS OR METALLIC COMPOSITIONS

8  DF  FERROUS (I.E., IRON BASE) {24}
104  DF  .~ Chromium containing, but less than 9 percent {4}
114.~.~ Tungsten containing

DEFINITION

Classification: 420/114

Tungsten containing:

(under subclass 104) Alloy or metallic composition which additionally contains tungsten.