US PATENT SUBCLASS 8 / 921
.~ Cellulose ester or ether

Current as of: June, 1999
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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

920  DF  SYNTHETIC FIBER DYEING {6}
921.~ Cellulose ester or ether

DEFINITION

Classification: 8/921

Cellulose ester or ether:

(under subclass 920) Subject matter involving cellulose ester or ether fiber.