US PATENT SUBCLASS 122 / 111
.~.~ Vertical boiler

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

44.1  DF  FIRE TUBE {11}
*  DD  .~ Transverse {3}
111.~.~ Vertical boiler {1}
112  DF  .~.~.~> Water firebox

DEFINITION

Classification: 122/111

(under subclass 44) Subject matter relating to vertical boilers having transverse fire tubes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

187, for vertical flue boilers with transverse fire tubes.