US PATENT SUBCLASS 420 / 544
.~.~.~ Silicon 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

528  DF  ALUMINUM BASE {7}
542  DF  .~ Magnesium containing {3}
543  DF  .~.~ Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing {2}
544.~.~.~ Silicon containing

DEFINITION

Classification: 420/544

Silicon containing:

(under subclass 543) Alloy, or metallic composition which additionally contains silicon.