US PATENT SUBCLASS 400 / 900
CHEMICAL-SYMBOL CHARACTER
Current as of:
June, 1999
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400 /
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TYPEWRITING MACHINES
900
CHEMICAL-SYMBOL CHARACTER
DEFINITION
Classification: 400/900
CHEMICAL-SYMBOL CHARACTER:
(under the class definition) Subject matter wherein the typewriter is capable of imprinting a character* that represents a symbol used in chemistry.