US PATENT SUBCLASS 110 / 318
.~ Having arch

Current as of: June, 1999
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110 /   HD   FURNACES

317  DF  INCLUDING FIREBOX {1}
318.~ Having arch {3}
319  DF  .~.~> And flame shaper
320  DF  .~.~> Adjustable dimension firebox
321  DF  .~.~> Door arch

DEFINITION

Classification: 110/318

Having arch:

(under subclass 317) Apparatus provided with structure specifically provided to reflect heat or combustion products in a desired direction or to a desired area.