US PATENT SUBCLASS 503 / 212
.~.~.~ Zinc

Current as of: June, 1999
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503 /   HD   RECORD RECEIVER HAVING PLURAL INTERACTIVE LEAVES OR A COLORLESS COLOR FORMER, METHOD OF USE, OR DEVELOPER THEREFOR

200  DF  HAVING A COLORLESS COLOR-FORMER, DEVELOPER THEREFOR, OR METHOD OF USE {16}
210  DF  .~ Heavy metal reactant {1}
211  DF  .~.~ Metal of atomic number 22-30 {1}
212.~.~.~ Zinc

DEFINITION

Classification: 503/212

Zinc:

(under subclass 211) Subject matter in which the heavy metal is zinc.