US PATENT SUBCLASS 73 / 263
.~.~.~ Multiple diaphragm

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

861  DF  VOLUME OR RATE OF FLOW {23}
232  DF  .~ Expansible chamber {6}
262  DF  .~.~ Diaphragm or collapsible wall {2}
263.~.~.~ Multiple diaphragm {3}
264  DF  .~.~.~.~> Duplex
265  DF  .~.~.~.~> With rotary valve {1}
268  DF  .~.~.~.~> With oscillating or reciprocating valve

DEFINITION

Classification: 73/263

(under subclass 262) Diaphragm or collapsible wall meters employing more than one diaphragm to define the expansible measuring chambers.

SEE OR SEARCH CLASS

92, Expansible Chamber Devices,

48+, for an expansible chamber device having a plurality of diaphragms.