US PATENT SUBCLASS 122 / 109
.~ Inclined

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

44.1  DF  FIRE TUBE {11}
109.~ Inclined

DEFINITION

Classification: 122/109

(under subclass 44) Devices placed in inclined position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47, 50, 51, 54, and 110, for boilers having some of the fire tubes inclined.