US PATENT SUBCLASS 73 / 279
.~.~ Diaphragm
Current as of:
June, 1999
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73 /
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MEASURING AND TESTING
861
DF
VOLUME OR RATE OF FLOW
{23}
272 R
DF
.~ Element {7}
279
.~.~ Diaphragm {1}
280
DF
.~.~.~
> With oiling structure
DEFINITION
Classification: 73/279
(under subclass 272) Elements comprising diaphragm or bellows structure, per se, limited to use in meters.
SEE OR SEARCH CLASS
92, Expansible Chamber Devices,
96+, for a diaphragm type expansible chamber device.