US PATENT SUBCLASS 442 / 298
.~.~ Including a bituminous layer
Current as of:
June, 1999
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442 /
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FABRIC (WOVEN, KNITTED, OR NONWOVEN TEXTILE OR CLOTH, ETC.)
181
DF
WOVEN FABRIC (I.E., WOVEN STRAND OR STRIP MATERIAL)
{13}
295
DF
.~ Including a paper or wood pulp layer {5}
298
.~.~ Including a bituminous layer
DEFINITION
Classification: 442/298
Including a bituminous layer:
(under subclass 295) Subject matter wherein at least one layer is disclosed as being coated or impregnated with a pitch, asphalt, tar, bitumen, or the residue from the distillation of mineral oil and/or coal.