US PATENT SUBCLASS 48 / 68
.~.~.~ Rotary bottom

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

61  DF  GENERATORS {4}
62 R  DF  .~ Cupola {18}
67  DF  .~.~ Water jacket {1}
68.~.~.~ Rotary bottom

DEFINITION

Classification: 48/68

Water-jacketed cupola structures having a rotary bottom for supporting the fuel.