US PATENT SUBCLASS 122 / 18
.~.~.~ Fluid fuel

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

13.1  DF  STAND BOILER {6}
*  DD  .~ Water tube {2}
*  DD  .~.~ Below boiler {1}
18.~.~.~ Fluid fuel

DEFINITION

Classification: 122/18

(under subclass 13) Stand boilers provided with water tubes located below the boiler and heated by a fluid fuel burner.