US PATENT SUBCLASS 237 / 19
COMBINED WITH WATER HEATER


Current as of: June, 1999
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237 /   HD   HEATING SYSTEMS

19COMBINED WITH WATER HEATER


DEFINITION

Classification: 237/19

(under the class definition) Heating systems having means for heating the fluid used in the system and also for additional volume of water.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers,

20, for subsidiary boilers.

126, Stoves and Furnaces,

5, for combined cooking and heating stoves; 513+ for

fireplaces having water backs and 366, for submerged water heater systems.