US PATENT SUBCLASS 417 / 473
.~.~ Plural bellows

Current as of: June, 1999
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417 /   HD   PUMPS

437  DF  EXPANSIBLE CHAMBER TYPE {40}
472  DF  .~ Bellows-type chamber {1}
473.~.~ Plural bellows

DEFINITION

Classification: 417/473

(under subclass 472) Apparatus comprising a plurality of separate pump chambers each including a separate bellows.

(1) Note. The separate bellows may have a common wall.

SEE OR SEARCH CLASS

92, Expansible Chamber Devices,

37, for plural bellows-type expansible chamber devices, per se.