US PATENT SUBCLASS 122 / 268
.~.~ Inclined

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

235.11  DF  WATER TUBE {52}
266  DF  .~ Internal fire tube {5}
268.~.~ Inclined

DEFINITION

Classification: 122/268

(under subclass 266) Devices whose water tubes are inclined.

SEE OR SEARCH THIS CLASS, SUBCLASS:

269, for plural fire tubes within the water tubes.

270, for the tubes placed over a firebox.