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| Patents for F24D 12 - Other central heating systems (923) |
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| 08/06/1980 | EP0013669A1 Heating device | | 04/29/1980 | CA1076537A1 Fireplace heating system | | 04/29/1980 | CA1076536A1 Heating system linking two different heat sources to two distinct diffuser ductworks | | 02/19/1980 | US4189096 Central heating plant | | 02/12/1980 | CA1071483A1 Auxiliary heating device for standard hot water type home heating systems | | 11/01/1979 | WO1979000874A1 Heating device | | 10/16/1979 | US4170879 Method and system for utilizing waste heat generated in thermal electric power stations | | 08/07/1979 | US4163430 Heat recovery and filter system and process for furnace exhaust gases | | 07/17/1979 | CA1058462A1 Heating system having high-low temperature limit controlled auxiliary boiler | | 07/03/1979 | US4159801 Fireplace boiler | | 04/03/1979 | US4147301 Heating system | | 12/26/1978 | US4131231 Fireplace heating system | | 11/28/1978 | US4127107 Auxiliary heating device for standard hot water type home heating systems | | 09/19/1978 | US4114809 Wind powered hydraulic heating system | | 03/28/1978 | US4080701 Water jacket fabrication | | 03/21/1978 | US4079778 Heating system | | 01/03/1978 | US4066210 Chimney heat reclaimer | | 10/04/1977 | US4052001 Heating system | | 07/26/1977 | US4037779 Heating system having high-low temperature limit controlled auxiliary boiler | | 05/24/1977 | US4025043 Fireplace heating system | | 04/26/1977 | US4019677 Heating system for building structures | | 11/02/1976 | US3989189 Heating system | | 05/25/1976 | US3958755 Hydro-thermo fireplace and heating system therefor |
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