US PATENT SUBCLASS 122 / 104-- .~.~.~.~ Over bridge wall

US PATENT SUBCLASS 122 / 104
.~.~.~.~ Over 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	.~.~ Water tube {4}
*	DD	.~.~.~ Rearwardly declined {1}
104		.~.~.~.~ Over bridge wall

DEFINITION

Classification: 122/104

(under subclass 51) Devices having rearwardly declined water tubes over the bridge wall.

SEE OR SEARCH THIS CLASS, SUBCLASS:

108, and 154, for horizontal flue boilers, with water-tubes over the bridge wall.

195+, for horizontal cylindrical boilers provided with various kinds of water-tubes in the combustion chamber.

291+, and 296, for rearwardly declined water-tubes over the bridge wall, having a longitudinally posited drum without fire-tubes over the water-tubes.