| Patents for F25D 21 - Defrosting; Preventing frosting; Removing condensed or defrost water (6,980) |
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| 02/24/1981 | US4251999 Defrosting control system |
| 02/24/1981 | US4251988 Defrosting system using actual defrosting time as a controlling parameter |
| 02/03/1981 | US4248052 Flow sensor and defrost system including same |
| 02/03/1981 | US4248015 Multi-pane glazed door defrosting system |
| 01/20/1981 | US4245482 Glass door merchandiser |
| 01/20/1981 | CA1093850A1 Reverse flow medium temperature display |
| 01/14/1981 | EP0022352A2 A waste trap and a refrigeration unit incorporating such a waste trap |
| 01/13/1981 | CA1093329A1 Multiple compressor heat pump with coordinated design |
| 01/13/1981 | CA1093303A1 Efficiency air cycle environmental control system |
| 01/07/1981 | EP0021597A2 Heat transfer apparatus for releasably securing heating or cooling means to pipe |
| 01/07/1981 | EP0021151A1 Adaptive defrost control and method |
| 01/06/1981 | US4242882 Glass door merchandiser |
| 12/30/1980 | US4241587 Refrigerating apparatus, especially refrigerator or freezer |
| 12/30/1980 | CA1092384A1 Frost removal apparatus for cryogenic freezing tunnel |
| 12/30/1980 | CA1092383A1 Cooling arrangement for a refrigerator machinery compartment |
| 12/16/1980 | US4239518 Refrigerated case with movable fan panel |
| 11/25/1980 | CA1090441A1 Frost detector |
| 11/25/1980 | CA1090307A1 Control for a combination furnace and heat pump system |
| 11/25/1980 | CA1090131A1 Air drying apparatus of the condensation type |
| 11/18/1980 | CA1089949A1 Frost detecting device |
| 11/11/1980 | US4232528 Frost detector |
| 10/28/1980 | CA1088334A1 Water condensate recovery device |
| 10/15/1980 | EP0017633A1 Method of defrosting a freezing chamber and arrangement for carrying out the method |
| 10/15/1980 | EP0017458A2 Defrosting control apparatus |
| 10/14/1980 | CA1087411A1 Refrigeration cooling unit with non-uniform heat input for defrost |
| 10/01/1980 | EP0015989A1 Improved refrigeration means and methods |
| 09/29/1980 | EP0015989A4 Improved refrigeration means and methods. |
| 09/16/1980 | CA1085636A1 Capillary retainer clip |
| 09/16/1980 | CA1085635A1 Refrigerator having cabinet warming heat transfer device |
| 09/03/1980 | EP0015206A1 Refrigerator with moulded base |
| 08/12/1980 | US4216658 Refrigeration means and methods |
| 08/12/1980 | CA1083690A1 Input control system |
| 08/05/1980 | US4215817 Devices for heating premises by the use of heat pumps and method therefor |
| 08/05/1980 | US4215554 Frost control system |
| 07/08/1980 | US4211090 Household refrigerator with air circulation and cooling arrangement |
| 07/01/1980 | US4209994 Heat pump system defrost control |
| 07/01/1980 | US4209993 Efficiency air cycle environmental control system |
| 07/01/1980 | CA1080487A1 Defrost timer having selectable defrost time |
| 06/24/1980 | US4208884 Air defrost housing |
| 06/24/1980 | CA1079995A1 Method and apparatus for defrosting a display refrigerator or freezer |
| 06/17/1980 | US4207753 Drain system for household refrigerator |
| 06/17/1980 | US4207747 Air defrost system using secondary air band components |
| 06/10/1980 | US4206615 Insulative multi-pane window structure of refrigerator or freezer |
| 06/10/1980 | US4206612 Refrigeration system control method and apparatus |
| 06/03/1980 | US4205533 Refrigerator having a control indicator optic arrangement and indicating method |
| 05/13/1980 | CA1077284A1 Anti-condensation system for refrigerator doors |
| 05/06/1980 | CA1076827A1 Air defrost system using secondary air band components |
| 05/06/1980 | CA1076820A1 Method and apparatus for drilling a hole in a body of ice and for the destruction of a body of ice |
| 04/29/1980 | US4199957 Evaporator assembly |
| 04/15/1980 | US4198222 Condensation preventing arrangement for interior of a household refrigerator |
| 04/15/1980 | US4197718 Multideck freezer and elimination of all antisweat heater wire |
| 04/15/1980 | US4197717 Household refrigerator including a vacation switch |
| 03/18/1980 | CA1073689A1 Household refrigerator with air circulation and cooling arrangement |
| 03/11/1980 | US4192149 Post condenser loop case heater controlled by ambient humidity |
| 03/11/1980 | CA1073229A1 Control system for heat pump and furnace combination |
| 03/04/1980 | US4191026 Apparatus for defrosting low temperature heat exchanger |
| 03/04/1980 | US4191024 Defrosting method and cooling apparatus in a refrigeration system |
| 03/04/1980 | CA1072758A1 Refrigerated display |
| 02/19/1980 | US4188794 Freezer with rapid defrosting |
| 02/05/1980 | US4187093 Refrigerator electronic temperature control and malfunction signal apparatus |
| 01/15/1980 | US4183223 Method and apparatus for signal transmission in refrigeration units |
| 01/08/1980 | US4182132 Apparatus for the cooling and dehumidification of ambient air in regions having a hot and humid climate |
| 01/08/1980 | US4182130 Method and apparatus for defrosting a display refrigerator or freezer |
| 01/01/1980 | CA1068921A Diversion defrost display cabinet |
| 01/01/1980 | CA1068918A Heat pump frost control system |
| 12/18/1979 | US4178988 Control for a combination furnace and heat pump system |
| 12/18/1979 | US4178767 Reverse fan heat pump defrost control system |
| 12/13/1979 | WO1979001051A1 Improved refrigeration means and methods |
| 12/04/1979 | US4176524 Frost detector |
| 12/04/1979 | CA1067303A1 Apparatus for defrosting low temperature heat exchanger |
| 11/13/1979 | US4173871 Refrigeration apparatus demand defrost control system and method |
| 11/06/1979 | US4173127 Frost removal apparatus for cryogenic freezing tunnel |
| 11/06/1979 | CA1065630A1 Means for sensing frost accumulation in a refrigeration mechanism |
| 10/30/1979 | US4172493 Temperature control system |
| 10/23/1979 | CA1064717A1 Portable cooling apparatus |
| 10/17/1979 | EP0004672A2 Cooled counter |
| 10/17/1979 | EP0004671A2 Refrigerated display case |
| 10/17/1979 | EP0004552A1 Heat accumulator containing water as means for heat storage and method to unload the heat accumulator |
| 10/16/1979 | US4170998 Portable cooling apparatus |
| 10/02/1979 | US4169358 Defrosting apparatus for a refrigerator |
| 08/07/1979 | US4163373 Device for extracting moisture from a space |
| 08/07/1979 | US4163327 Direct condenser defrosting system |
| 08/07/1979 | CA1059736A1 Method of producing fibre-containing building members |
| 07/31/1979 | US4162571 Method of constructing refrigerator cabinet |
| 07/31/1979 | CA1059329A1 Two stage compressor heating |
| 06/26/1979 | CA1057381A1 Frost detecting device for a refrigeration apparatus |
| 06/26/1979 | CA1057347A1 Insulated refrigerator door frame |
| 06/26/1979 | CA1057070A1 Defrost pressure control system |
| 06/19/1979 | US4158294 Refrigerator having cabinet warming heat transfer device |
| 06/12/1979 | US4157649 Multiple compressor heat pump with coordinated defrost |
| 06/12/1979 | CA1056173A1 Air defrost display case |
| 06/12/1979 | CA1056172A1 Air defrost reach-in refrigerated display cabinet |
| 05/29/1979 | US4156352 Cooling arrangement for a refrigerator machinery compartment |
| 05/29/1979 | US4156350 Refrigeration apparatus demand defrost control system and method |
| 05/15/1979 | CA1054386A1 Defrosting in open show case of cold-air-circulation type |
| 05/08/1979 | US4152900 Refrigeration cooling unit with non-uniform heat input for defrost |
| 05/01/1979 | US4151723 Refrigeration system control method and apparatus |
| 05/01/1979 | US4151722 Automatic defrost control for refrigeration systems |
| 05/01/1979 | CA1053735A1 Insulated door mounting frame structure |
| 04/24/1979 | US4150551 Cooling apparatus |