US PATENT SUBCLASS 48 / 184
.~ Diaphragm

Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

180.1  DF  MIXERS {9}
184.~ Diaphragm

DEFINITION

Classification: 48/184

Devices where a diaphragm operates the valves controlling the supply of gases or gas and air, the pressure of the gas operating the diaphragm.