US PATENT SUBCLASS 432 / 150
.~.~.~.~ Spaced combustion products exhaust ports

Current as of: June, 1999
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432 /   HD   HEATING

120  DF  WORK CHAMBER HAVING HEATING MEANS {12}
121  DF  .~ Having means by which work is progressed or moved mechanically {9}
136  DF  .~.~ Combustion products generated in or fed to chamber {4}
143  DF  .~.~.~ Having means forming work path from inlet to outlet {5}
150.~.~.~.~ Spaced combustion products exhaust ports

DEFINITION

Classification: 432/150

(under subclass 143) Apparatus in which combustion products are withdrawn from the work path through a plurality of distinct ports.