US PATENT SUBCLASS 122 / 56
.~.~.~ Rear of bridge wall

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

44.1  DF  FIRE TUBE {11}
51  DF  .~ Horizontal {22}
*  DD  .~.~ Depending fire tube {1}
56.~.~.~ Rear of bridge wall

DEFINITION

Classification: 122/56

(under subclass 51) Devices having a separate and distinct boiler section provided with fire tubes, located beneath the boiler, at the rear of the bridge wall.

SEE OR SEARCH THIS CLASS, SUBCLASS:

81, 85+, 110, and 191, for closely allied art.