US PATENT SUBCLASS 122 / 29
ANNULAR FIREBOX

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

29ANNULAR FIREBOX

DEFINITION

Classification: 122/29

(under the class definition) Boilers not otherwise classifiable which have an annular firebox.

SEE OR SEARCH THIS CLASS, SUBCLASS:

127, 184, 246, 309, 323, and 335, for other boilers with an annular firebox.