US PATENT SUBCLASS 420 / 469
COPPER BASE


Current as of: June, 1999
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420 /   HD   ALLOYS OR METALLIC COMPOSITIONS

469COPPER BASE {15}
470  DF  .~> Tin containing {5}
477  DF  .~> Zinc containing {5}
485  DF  .~> Nickel containing {3}
489  DF  .~> Aluminum, gallium, indium, or thallium containing
490  DF  .~> Silicon containing
491  DF  .~> Lead containing
492  DF  .~> Titanium, zirconium or hafnium containing
493  DF  .~> Manganese containing
494  DF  .~> Beryllium, magnesium, or alkaline earth metal containing
495  DF  .~> Other refractory metal containing
496  DF  .~> Iron or cobalt containing
497  DF  .~> Noble metal containing
498  DF  .~> Cadmium, or mercury containing
499  DF  .~> Phosphorus, arsenic, antimony, or bismuth containing
500  DF  .~> Sulfur, selenium, or tellurium containing


DEFINITION

Classification: 420/469

COPPER BASE:

(under the class definition) Alloy, or metallic composition which contains over 50 percent of copper by weight.