US PATENT SUBCLASS 126 / 99 A
.~ Tubular heater
Current as of: June, 1999
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Unofficial Alpha Subclasses: R P A C D
DEFINITION
Classification: 126/99
(under the class definition) Subject matter relating to furnaces which heat air in an inclosing case or jacket to be distributed to points remote from the furnace.
SEE OR SEARCH THIS CLASS, SUBCLASS:
6, for combined cooking and hot air stoves.
67+, for hot air stoves.
500+, for hot air fireplaces.
SEE OR SEARCH CLASS
432, Heating, 222+, for means heating air by mixing it with combustion products, and subclass 219 for a residual apparatus for heating a gaseous or liquid material.
