US PATENT SUBCLASS 417 / 266
.~.~ Three or more

Current as of: June, 1999
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417 /   HD   PUMPS

244  DF  SUCCESSIVE STAGES {8}
254  DF  .~ Reciprocating rigid stages {8}
266.~.~ Three or more

DEFINITION

Classification: 417/266

(under subclass 254) Apparatus in which the pumped fluid is successively acted upon by three or more reciprocating pumping members.