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Class Information
Number: 126/72
Name: Stoves and furnaces > Stoves > Heating > Hot air > Tubular air heaters
Description: Devices provided with a series of air-tubes which are passed vertically, horizontally, or diagonally through the combustion chamber.

Patents under this class:

Patent Number Title Of Patent Date Issued
7882855 Air flow path for an air impingement finger duct Feb. 8, 2011
7823578 High efficiency biomass stove Nov. 2, 2010
5934270 Fireplace heat exchange device Aug. 10, 1999
5253635 Gas-fired heater Oct. 19, 1993
5170773 Space heating unit for recreational vehicles Dec. 15, 1992
5105797 Solid fuel burning stove Apr. 21, 1992
4836182 Gas burning heating device Jun. 6, 1989
4777928 Efficient, pollution free, woodburning furnace Oct. 18, 1988
4630592 Wood stove Dec. 23, 1986
4596231 Self-cleaning, high heat exchange wood or coal stove Jun. 24, 1986
4479481 Wood fuel heating apparatus and combustion process Oct. 30, 1984
4461275 Apparatus and method for burning wood Jul. 24, 1984
4425901 Heat exchange device Jan. 17, 1984
4422437 Catalytic firebox Dec. 27, 1983
4343289 Wood burning stove Aug. 10, 1982
4248204 Solar rock fireplace heating system Feb. 3, 1981
4230090 Heating stove Oct. 28, 1980
4213443 Stove construction Jul. 22, 1980
4204517 Fireplace furnace May. 27, 1980
4182303 Stacked indirect air heater with single path airflow Jan. 8, 1980
4154210 Wood fired furnace May. 15, 1979
4150658 Circulating-air heating stove Apr. 24, 1979
4128094 Heater Dec. 5, 1978
4127100 Wood burning stove Nov. 28, 1978
4111182 Franklin stove attachments Sep. 5, 1978

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