US PATENT SUBCLASS 417 / 384
.~.~.~.~ Pneumatic

Current as of: June, 1999
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417 /   HD   PUMPS

321  DF  MOTOR DRIVEN {32}
375  DF  .~ Fluid motor {9}
379  DF  .~.~ With motive fluid generator {5}
383  DF  .~.~.~ Pulsator or fluid link {3}
384.~.~.~.~ Pneumatic

DEFINITION

Classification: 417/384

(under subclass 383) Apparatus in which at least a portion of the confined fluid is compressible (e.g., air).

(1) Note. Those devices in which only a portion of the confined fluid is compressible and the other portion is incompressible are included under this definition.