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Class Information
Number: 392/349
Name: Electric resistance heating devices > Heating devices (class 219 subclass 200) > Convection space heater > Central heating type
Description: Subject matter wherein the convection space heater is located at a central location to convey heated air to different parts or rooms of a building.










Sub-classes under this class:

Class Number Class Name Patents
392/350 With air delivery duct 40


Patents under this class:

Patent Number Title Of Patent Date Issued
8463113 Fan heater applying a carbon fiber ribbon secured in each heating cartridge Jun. 11, 2013
7925143 Recycle heat exchanger for watercraft Apr. 12, 2011
5718372 Temperature controller Feb. 17, 1998
5377297 Method of modifying masonry furnace by inserting electric heating elements through furnace top cover Dec. 27, 1994
4825847 Air furnace system May. 2, 1989
4559441 Method of controlling a space heating system Dec. 17, 1985
4328407 Heating system and control May. 4, 1982
4105894 Steam heated hot air furnace having an electric steam boiler Aug. 8, 1978
4035610 Furnace cabinet having integral heater and blower assemblies Jul. 12, 1977
3958101 Space heating using off-peak electric heat storage May. 18, 1976











 
 
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