US PATENT SUBCLASS 122 / 158
.~.~.~ Water jacket

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

135.1  DF  FLUE {4}
155.1  DF  .~ Vertical {16}
157  DF  .~.~ Central magazine {1}
158.~.~.~ Water jacket

DEFINITION

Classification: 122/158

(under subclass 157) Devices in which the magazine is water jacketed.