US PATENT SUBCLASS 122 / 235.13
.~ With fuel burners having posts and tuyeres

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

235.11  DF  WATER TUBE {52}
235.13.~ With fuel burners having posts and tuyeres

DEFINITION

Classification: 122/235.13

With fuel burners having posts and tuyeres:

(under subclass 235.11) Devices having specific structure of the combustor, pipe, nozzle or opening through which air is forced to facilitate combustion.