US PATENT SUBCLASS 48 / 37
.~.~.~ Pressure valves

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

*  DD  ACETYLENE {5}
*  DD  .~ Generators {5}
4  DF  .~.~ Water feed {15}
37.~.~.~ Pressure valves

DEFINITION

Classification: 48/37

Means for operating the water-feed valve by gas-pressure in the generator.

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