US PATENT SUBCLASS 417 / 102
.~.~.~ Plural chambers

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
92  DF  .~ Liquid piston {6}
101  DF  .~.~ Piston level responsive control for cyclic operation {1}
102.~.~.~ Plural chambers

DEFINITION

Classification: 417/102

(under subclass 101) Apparatus in which a plurality of interrelated variable volume compressing chambers are provided.