US PATENT SUBCLASS 122 / 101
.~.~ Water smoke box

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

44.1  DF  FIRE TUBE {11}
51  DF  .~ Horizontal {22}
101.~.~ Water smoke box

DEFINITION

Classification: 122/101

(under subclass 51) Devices having a water cooled smoke-box.

SEE OR SEARCH THIS CLASS, SUBCLASS:

151, 423, 425, and 426, for special features.