| Patents for F25D 21 - Defrosting; Preventing frosting; Removing condensed or defrost water (6,980) |
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| 04/24/1979 | US4150550 Self defrosting refrigerated display case |
| 04/24/1979 | US4150518 Mullion mounting |
| 04/17/1979 | USRE29966 Heat pump with frost-free outdoor coil |
| 04/10/1979 | US4148197 Defroster arrangement in a refrigerating showcase |
| 04/03/1979 | US4147038 Auxiliary cooling apparatus |
| 03/27/1979 | US4145893 Diversion defrost display cabinet |
| 03/20/1979 | US4144720 Air defrost system using secondary air band components |
| 03/06/1979 | US4142374 Demand defrost time clock control circuit |
| 02/27/1979 | US4142092 Refrigerator cabinet case heater installation |
| 02/13/1979 | CA1048283A1 Defrosting apparatus and method for heat exchangers |
| 01/30/1979 | CA1047266A1 Defroster arrangement in a refrigerating showcase |
| 01/23/1979 | CA1046784A1 Compressor refrigeration plant |
| 01/23/1979 | CA1046783A1 Heat pump frost control system |
| 01/23/1979 | CA1046782A1 Room heating devices with heat pumps |
| 01/02/1979 | US4132085 Control apparatus including an electronic timer |
| 12/19/1978 | US4129993 Refrigeration equipment, particularly household refrigeration or the like |
| 11/28/1978 | US4127765 Anti-condensation system for refrigerator doors |
| 11/28/1978 | CA1043116A1 Compressor refrigeration plant |
| 11/21/1978 | US4126015 Air cooling apparatus |
| 11/07/1978 | US4123915 Defrost timer having selectable defrost time |
| 11/07/1978 | CA1041782A1 Control means for refrigeration systems |
| 10/31/1978 | US4123792 Circuit for monitoring the mechanical power from an induction motor and for detecting excessive heat exchanger icing |
| 10/31/1978 | US4123537 2-Halo-4-aminomethyl-6-alkyl-3-pyridinols useful as diuretics in treating hypertension and edema |
| 10/31/1978 | US4122892 Devices for heating premises by the use of heat pumps and method therefor |
| 10/31/1978 | US4122687 Refrigeration system with low energy defrost |
| 10/24/1978 | US4121433 Means for sensing frost accumulation in a refrigeration mechanism |
| 10/17/1978 | US4120174 Air defrost display case |
| 10/03/1978 | US4117698 Refrigerated display |
| 09/26/1978 | US4116651 Heat sink temperature stabilized evaporator coil |
| 09/19/1978 | US4114396 Refrigeration evaporator coil with non-frosting fins |
| 09/12/1978 | US4114065 Refrigerator cabinet and method of constructing |
| 08/29/1978 | US4109481 Frost detector |
| 08/15/1978 | US4106305 Open well type refrigerated display case with reverse flow of air bands |
| 08/08/1978 | US4105064 Two stage compressor heating |
| 08/08/1978 | US4104888 Defrost control for heat pumps |
| 07/25/1978 | US4102391 Heat pump frost control system |
| 07/25/1978 | US4102390 Control system for heat pump and furnace combination |
| 07/18/1978 | US4101747 Differential pressure operated switch |
| 06/27/1978 | US4097096 Refrigerator heater tube grommet |
| 06/27/1978 | US4096708 Compressor refrigeration plant |
| 05/30/1978 | US4091637 Electric defrost heater for fin and tube refrigeration heat exchanger |
| 05/09/1978 | US4087987 Defrost pressure control system |
| 05/02/1978 | US4086780 Refrigerating apparatus, in particular two-temperature refrigerator |
| 05/02/1978 | US4086779 Refrigeration defrosting |
| 04/18/1978 | US4084388 Refrigeration control system for optimum demand operation |
| 04/11/1978 | US4083196 Compressor refrigeration plant |
| 03/28/1978 | US4080756 Insulated refrigerator door frame |
| 03/07/1978 | US4077229 Household refrigerator with air circulation and cooling arrangement |
| 02/21/1978 | US4074987 Defrost sensing system for freezer compartment |
| 02/07/1978 | US4072488 Air defrost reach-in refrigerated display cabinet |
| 12/06/1977 | US4061482 Cooling coil and air distribution system defrost means |
| 11/08/1977 | US4056948 Presettable defrost timer |
| 09/06/1977 | US4045971 Frost detector |
| 09/06/1977 | US4045961 Control of freezing in air-cooled steam condensers |
| 08/16/1977 | US4041727 Evaporator assembly |
| 07/26/1977 | US4037427 Refrigeration evaporators with ice detectors |
| 07/12/1977 | US4035608 Multi-pane window structure |
| 06/07/1977 | US4027497 Freeze-up prevention device for a heat pump |
| 05/31/1977 | US4026121 Defrosting in open show case of cold-air-circulation type |
| 05/24/1977 | US4024722 Heat pump frost control system |
| 05/17/1977 | US4023380 Evaporation tray for refrigerators |
| 05/10/1977 | US4022032 Refrigeration system |
| 03/01/1977 | US4009586 Method and apparatus for preventing condensation from forming about the periphery of a freezer door |
| 02/15/1977 | US4007603 Apparatus for defrosting of an evaporator in a heat pump |
| 02/08/1977 | US4006601 Refrigerating device |
| 01/25/1977 | US4004370 Insulated door mounting frame structure |
| 12/28/1976 | US3999599 Condensate pan for evaporator core in vehicle air conditioning system |
| 12/21/1976 | US3998069 Refrigerator receptacle support and adjustable air deflector-drip tray |
| 11/23/1976 | US3992895 Defrost controls for refrigeration systems |
| 10/05/1976 | US3984223 Refrigerator cabinet with condenser tube loop in partition mullion |
| 06/29/1976 | US3965694 Method and device for thermally air-conditioning a room, a vat or the like |
| 06/29/1976 | US3965692 Refrigeration control circuit |
| 06/08/1976 | US3961495 Frost detecting device for a refrigeration apparatus |
| 04/20/1976 | US3950962 System for defrosting in a heat pump |
| 04/20/1976 | US3950961 Cooling system for a two-temperature refrigerator |
| 04/06/1976 | US3948410 Refrigerator cabinet |
| 03/23/1976 | US3946286 Device for controlling the formation of frost on cooling radiators and the defrosting of the same |
| 03/23/1976 | US3945217 Refrigeration system defrost control |
| 02/24/1976 | US3939666 Stile and mullion heater control |
| 02/10/1976 | US3937033 Air defrost display case |