US PATENT SUBCLASS 110 / 125
.~.~ Hood

Current as of: June, 1999
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110 /   HD   FURNACES

119  DF  SPARK ARRESTERS {3}
122  DF  .~ Smokebox {7}
125.~.~ Hood

DEFINITION

Classification: 110/125

(under subclass 122) Devices having a hood over the boiler tubes, through which the products of combustion must pass.