US PATENT SUBCLASS 405 / 265
.~.~.~ Bituminous

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

Internet Version by PATENTEC © 1999      Terms of Use


405 /   HD   HYDRAULIC AND EARTH ENGINEERING

258  DF  EARTH TREATMENT OR CONTROL {5}
263  DF  .~ Chemical {2}
264  DF  .~.~ Organic {1}
265.~.~.~ Bituminous

DEFINITION

Classification: 405/265

Bituminous:

(under subclass 264) Method or apparatus wherein the organic compound is a derivative of petroleum, coal tar, or similar compound.