US PATENT SUBCLASS 417 / 467
.~.~ Relatively movable cylinders


Current as of: June, 1999
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417 /   HD   PUMPS

437  DF  EXPANSIBLE CHAMBER TYPE {40}
460  DF  .~ Moving cylinder {7}
467.~.~ Relatively movable cylinders


DEFINITION

Classification: 417/467

(under subclass 460) Apparatus comprising two or more cylinders, each of said cylinders having an absolute movement and capable of or constrained to move relative to each other.

SEE OR SEARCH CLASS

92, Expansible Chamber Devices,

66, for relatively movable working members comprising or disposed within movably mounted cylinders.