US PATENT SUBCLASS 122 / 371
WATER GRATE

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

371WATER GRATE {5}
*  DD  .~> Plural firebox {1}
373  DF  .~> Cage
374  DF  .~> Grate structure {1}
376  DF  .~> Progressive feed
*  DD  .~> Water firebox {2}

DEFINITION

Classification: 122/371

(under the class definition) Boilers having water grates that do not come within the definitions of other subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2, 5, 66, 67, 97, 98, 129, 152, 203-207, 229, 232, 286, 287, 289, 321, 323, 353, 354, for other water grates.

SEE OR SEARCH CLASS

110, Furnaces,

267+, for progressive feed, and subclasses 298+ for hollow air-cooled grates.

126, Stoves and Furnaces, 152+, for other stove and furnace grates.