F24D 9 - Central heating systems employing combinations of heat-transfer fluids covered by two or more of groups

Patents for F24D 9 - Central heating systems employing combinations of heat-transfer fluids covered by two or more of groups (211)
11/1980
11/25/1980	CA1090307A1 Control for a combination furnace and heat pump system
09/1980
09/16/1980	CA1085636A1 Capillary retainer clip
08/1980
08/26/1980	CA1084462A1 Heating installation having a radiation-and convection floor heater
12/1979
12/18/1979	US4178988 Control for a combination furnace and heat pump system
12/18/1979	US4178907 Unified hot water and forced air heating system
07/1979
07/03/1979	US4159802 Heating system utilizing fuel bearing multi-tube water jacket
01/1979
01/24/1979	EP0000401A1 Apparatus for transferring heat from a heat source to a consumers' circuit
11/1978
11/07/1978	US4124178 Energy and fuel conserving unit heater
10/1977
10/04/1977	US4052587 Htw heating system having an electrode steam boiler as the direct source of htw
04/1977
04/12/1977	US4016834 Boiler with condenser
01/1976
01/20/1976	US3933199 Method and apparatus for supplying a temperature conditioned airflow to an open compartment in an explosion sustaining ambient surrounding

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