US PATENT SUBCLASS 60 / 673
.~.~.~ One fluid absorbs or reacts with another

Current as of: June, 1999
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60 /   HD   POWER PLANTS

643  DF  MOTIVE FLUID ENERGIZED BY EXTERNALLY APPLIED HEAT {11}
670  DF  .~ Power system involving change of state {6}
671  DF  .~.~ Motive fluid comprises a material other than steam or water {3}
673.~.~.~ One fluid absorbs or reacts with another

DEFINITION

Classification: 60/673

(under subclass 671) Apparatus, in which two distinct fluids come in contact with each other in the apparatus for reaction or absorption.