US PATENT SUBCLASS 122 / 208
.~.~ Fluid fuel

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

*  DD  PLATE {1}
*  DD  .~ Zigzag conduit {1}
208.~.~ Fluid fuel

DEFINITION

Classification: 122/208

(under the class definition) Boilers comprising flat plates provided with zigzag passages heated by fluid fuel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

356, for zigzag water tube boilers heated by fluid fuel.