US PATENT SUBCLASS 420 / 495
.~ Other refractory metal 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

469  DF  COPPER BASE {15}
495.~ Other refractory metal containing


DEFINITION

Classification: 420/495

Other refractory metal containing:

(under subclass 469) Alloy, or metallic composition which additionally contains at least one of the metals vanadium, chromium, niobium, molybdenum, tantalum, or tungsten.