US PATENT SUBCLASS 442 / 258
.~.~.~ At least one layer contains bituminous material (e.g., tar, pitch, asphalt, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


442 /   HD   FABRIC (WOVEN, KNITTED, OR NONWOVEN TEXTILE OR CLOTH, ETC.)

181  DF  WOVEN FABRIC (I.E., WOVEN STRAND OR STRIP MATERIAL) {13}
239  DF  .~ Woven fabric including an additional woven fabric layer {4}
255  DF  .~.~ Three or more distinct layers {9}
258.~.~.~ At least one layer contains bituminous material (e.g., tar, pitch, asphalt, etc.)

DEFINITION

Classification: 442/258

At least one layer contains bituminous material (e.g., tar pitch, asphalt, etc.):

(under subclass 255) Subject matter wherein at least one layer is disclosed as being pitch, asphalt, tar, bitumen, or the residue from the distillation of mineral oil and/or coal.