US PATENT SUBCLASS 442 / 121
.~ Coating or impregnation absorbs chemical material other than water

Current as of: June, 1999
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442 /   HD   FABRIC (WOVEN, KNITTED, OR NONWOVEN TEXTILE OR CLOTH, ETC.)

59  DF  COATED OR IMPREGNATED WOVEN, KNIT, OR NONWOVEN FABRIC WHICH IS NOT (A) ASSOCIATED WITH ANOTHER PREFORMED LAYER OR FIBER LAYER OR, (B) WITH RESPECT TO WOVEN AND KNIT, CHARACTERIZED, RESPECTIVELY, BY A PARTICULAR OR DIFFERENTIAL WEAVE OR KNIT, WHEREIN THE COATING OR IMPREGNATION IS NEITHER A FOAMED MATERIAL NOR A FREE METAL OR ALLOY LAYER {36}
121.~ Coating or impregnation absorbs chemical material other than water {1}
122  DF  .~.~> Chemical material is one used in biological or chemical warfare

DEFINITION

Classification: 442/121

Coating or impregnation absorbs chemical material other than water:

(under subclass 59) Subject matter wherein the coating or impregnation is specifically stated to absorb chemical material (e.g., heavy metal, etc., but not water).