US PATENT SUBCLASS 92 / 37
.~ Plural bellows
Current as of:
June, 1999
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92 /
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EXPANSIBLE CHAMBER DEVICES
34
DF
BELLOWS TYPE EXPANSIBLE CHAMBER
{10}
37
.~ Plural bellows {2}
38
DF
.~.~
> Non-working liquid moved by first bellows effects movement of second bellows
39
DF
.~.~
> With common movable wall
DEFINITION
Classification: 92/37
(under subclass 34) Apparatus comprising two or more bellows type expansible chamber devices.