US PATENT SUBCLASS 417 / 310
.~.~ Rotary expansible chamber pump

Current as of: June, 1999
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417 /   HD   PUMPS

279  DF  WITH CONDITION RESPONSIVE PUMPED FLUID CONTROL {22}
307  DF  .~ Pressure responsive relief or bypass valve {4}
310.~.~ Rotary expansible chamber pump

DEFINITION

Classification: 417/310

(under subclass 307) Apparatus wherein the pump is of the rotary expansible chamber type.