US PATENT SUBCLASS 122 / 318
.~.~ Vertical
Current as of:
June, 1999
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122 /
HD
LIQUID HEATERS AND VAPORIZERS
235.11
DF
WATER TUBE
{52}
305
DF
.~ Spur {8}
318
.~.~ Vertical {2}
319
DF
.~.~.~
> Fluid fuel
320
DF
.~.~.~
> Central magazine
DEFINITION
Classification: 122/318
(under subclass 305) Devices in which the spur tubes are vertical.
SEE OR SEARCH THIS CLASS, SUBCLASS:
133, for vertical fire tube boilers with vertical spur tubes.
181, for vertical flue boilers having vertical spur water tubes within the flue.
271, for internal fire-tube type water-tube boiler in which the tubes are vertical.
282, for water tube boilers having vertical looped tubes over the firebox.
348, for fluid fuel heated internal fire tube type water-tube boilers in which the tubes are vertical.
