US PATENT SUBCLASS 122 / 218
.~.~.~ Water firebox

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

209.1  DF  SECTIONAL {9}
*  DD  .~ Horizontal sections {1}
214  DF  .~.~ Superimposed {3}
218.~.~.~ Water firebox {1}
219  DF  .~.~.~.~> Central magazine

DEFINITION

Classification: 122/218

(under subclass 214) Devices with a water firebox.

SEE OR SEARCH THIS CLASS, SUBCLASS:

217, for horizontal sections centrally connected with a water firebox.