US PATENT SUBCLASS 44 / 634
.~ Briquetting

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

629  DF  APPARATUS FOR MAKING OR TREATING FUEL COMPOSITION {3}
634.~ Briquetting {1}
635  DF  .~.~> Plural operations {1}

DEFINITION

Classification: 44/634

Briquetting:

(under subclass 629) Subject matter specially adapted for use in manufacturing a fuel briquet.