US PATENT SUBCLASS 241 / 24.24
.~.~.~ Including coal

Current as of: June, 1999
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241 /   HD   SOLID MATERIAL COMMINUTION OR DISINTEGRATION

*  DD  PROCESSES {17}
24.1  DF  .~ With classifying or separating of material {9}
24.12  DF  .~.~ Of plural, diverse materials {8}
24.24.~.~.~ Including coal

DEFINITION

Classification: 241/24.24

Including coal:

(under subclass 24.12) Process of comminuting and separating including sorting out a component comprised of hard, carbonaceous earthen material.

(1) Note. "Soft" coal is considered to be hard under this definition; peat is not.