US PATENT SUBCLASS 122 / 245
.~.~.~ Fluid fuel

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

235.11  DF  WATER TUBE {52}
*  DD  .~ Coil or loop {1}
244  DF  .~.~ Central standpipe {2}
245.~.~.~ Fluid fuel

DEFINITION

Classification: 122/245

(under subclass 244) Devices heated by fluid fuel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

283, for analogous art.

322, for miscellaneous central stand pipe water tube boilers heated by fluid fuel.