US PATENT SUBCLASS 44 / 639
.~ Liquid

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}
639.~ Liquid

DEFINITION

Classification: 44/639

Liquid:

(under subclass 629) Subject matter specialized for use in the compounding of a liquid fuel.

SEE OR SEARCH CLASS

137, Fluid Handling, appropriate subclasses for process and apparatus for mixing, transporting and regulating the flow of liquids and gases in general.