US PATENT SUBCLASS 417 / 98
.~.~.~ Reciprocating

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}
93  DF  .~.~ Moving contracting chamber {5}
98.~.~.~ Reciprocating

DEFINITION

Classification: 417/98

(under subclass 93) Apparatus in which the chamber means is moved to-and-fro.