US PATENT SUBCLASS 420 / 91
.~.~.~ Nickel 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}
89  DF  .~ Copper containing {3}
90  DF  .~.~ Chromium containing {1}
91.~.~.~ Nickel containing

DEFINITION

Classification: 420/91

Nickel containing:

(under subclass 90) Alloy or metallic composition which additionally contains nickel.