US PATENT SUBCLASS 122 / 240.1
.~ Having plural fireboxes

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

235.11  DF  WATER TUBE {52}
240.1.~ Having plural fireboxes {2}
240.2  DF  .~.~> Series connected
240.3  DF  .~.~> Parallel connected

DEFINITION

Classification: 122/240.1

Having plural fireboxes:

Water tube boilers under subclasses 235.11+ having multiple fireboxes not otherwise provided for.

SEE OR SEARCH THIS CLASS, SUBCLASS:

23, for other types of fluid-fuel burners.

25, for boilers heated by a plurality of superimposed fluid-fuel burners.

53, 138, 204, and 205, for other types of boilers having water tubes and a plurality of fireboxes.

287, 294, 304, and 330, for water tube boilers of various types with plural fireboxes.