US PATENT SUBCLASS 92 / 35
.~ Expansible chamber formed by concentric bellows

Current as of: June, 1999
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92 /   HD   EXPANSIBLE CHAMBER DEVICES

34  DF  BELLOWS TYPE EXPANSIBLE CHAMBER {10}
35.~ Expansible chamber formed by concentric bellows

DEFINITION

Classification: 92/35

(under subclass 34) Apparatus comprising two concentrically arranged bellows defining a ring shaped expansible chamber therebetween.