US PATENT SUBCLASS 48 / 83
.~.~.~.~ Interlocking valves

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

61  DF  GENERATORS {4}
62 R  DF  .~ Cupola {18}
78  DF  .~.~ Water {3}
82  DF  .~.~.~ Up-and-down run {1}
83.~.~.~.~ Interlocking valves

DEFINITION

Classification: 48/83

Cupola structures for making water-gas by the up-and-down run provided with connected valves for changing the direction of the run.