the heat exchange medium being both water and air

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Patents Grantslast 30 patents

Information Patent Grant
Fireplace furnace heating system
- Patent number 5,224,650
- Issue date Jul 6, 1993
- David Gozikowski
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Heating apparatus
- Patent number 4,700,686
- Issue date Oct 20, 1987
- Chi G. Woo
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Fireplace for heating indoor spaces and water for sanitary use
- Patent number 4,436,079
- Issue date Mar 13, 1984
- Domenico Piazzetta
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Prefabricated fireplace
- Patent number 4,384,566
- Issue date May 24, 1983
- Rodney I. Smith
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Combustion apparatus and method of assembly
- Patent number 4,336,790
- Issue date Jun 29, 1982
- Gunther M. Bartsch
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
1467229
- Patent number 1,467,229
- Issue date Sep 4, 1923
- F24 - HEATING RANGES VENTILATING