US PATENT SUBCLASS 148 / 421
.~ Titanium, zirconium, or hafnium base

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

400  DF  STOCK {20}
421.~ Titanium, zirconium, or hafnium base

DEFINITION

Classification: 148/421

Titanium, zirconium or hafnium base:

(under subclass 400) Stock material which contains over 50 percent of titanium, over 50 percent, zirconium or over 50 percent hafnium by weight.