US PATENT SUBCLASS 44 / 592
.~ "Low-rank" coal (e.g., lignite, etc.)

Current as of: June, 1999
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44 /   HD   FUEL AND RELATED COMPOSITIONS

550  DF  CONSOLIDATED SOLIDS (E.G., BRIQUETTE, ETC.) {5}
592.~ "Low-rank" coal (e.g., lignite, etc.)

DEFINITION

Classification: 44/592

"Low-rank" coal (e.g., lignite, etc.):

(under subclass 550) Subject matter in which a starting material is coal of lesser heat value that bituminous coal, including brown coal, lignite, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

491, for a fuel briquet having peat as a starting material.