US PATENT SUBCLASS 122 / 225 A
.~.~.~ Water heater in flue

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

209.1  DF  SECTIONAL {9}
*  DD  .~ Vertical sections {4}
225 R  DF  .~.~ Transversely positioned {6}
225 A.~.~.~ Water heater in flue

Unofficial Alpha Subclasses: R A B F

DEFINITION

Classification: 122/225

(under subclass 209) Sectional boilers having sections vertically placed transversely of the boiler. A plane cutting the section and lying therein would be vertical and at right angles to the general course of the products of combustion.