US PATENT SUBCLASS 122 / 190
.~.~ Water tube

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

*  DD  HORIZONTAL CYLINDER {6}
*  DD  .~ Offset subjacent firebox {2}
190.~.~ Water tube

DEFINITION

Classification: 122/190

(under the class definition) Horizontal cylindrical boilers having an offset subjacent firebox having water tubes surrounding the fuel space.

SEE OR SEARCH THIS CLASS, SUBCLASS:

194, for analogous art.