US PATENT SUBCLASS 366 / 266
.~.~ Screw

Current as of: June, 1999
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366 /   HD   AGITATING

241  DF  STIRRER WITHIN STATIONARY MIXING CHAMBER {10}
262  DF  .~ Pump type {4}
266.~.~ Screw

DEFINITION

Classification: 366/266

Screw:

(under subclass 262) Subject matter wherein the pump is a continuous helical ribbon rotatable about its longitudinal axis to produce the pumping action.