US PATENT SUBCLASS 110 / 217
.~.~ Outlet screen

Current as of: June, 1999
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110 /   HD   FURNACES

203  DF  WITH EXHAUST GAS TREATMENT MEANS {5}
216  DF  .~ Means separating particles from exhaust gas {1}
217.~.~ Outlet screen

DEFINITION

Classification: 110/217

Outlet screen:

(under subclass 216) Apparatus wherein the chimney or flue has a foraminous member for preventing discharge of solid particles to the environment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

119+, for means preventing live sparks from passing out of the stack or chimney.