| Patents for F25B 25 - Machines, plant, or systems, using a combination of modes of operation covered by two or more of the groups (1,932) |
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| 01/06/1981 | US4242873 Heat pump type heating and cooling source system |
| 12/30/1980 | CA1092379A1 Refrigeration system for heat exchangers such as used in ice rinks and the like |
| 11/18/1980 | US4233817 Refrigeration apparatus |
| 10/28/1980 | CA1088333A1 Refrigerator |
| 05/06/1980 | US4201063 Method and apparatus for conserving energy in an air conditioning system |
| 05/06/1980 | US4201062 Method and apparatus for conserving energy in an air conditioning system |
| 04/29/1980 | US4199961 Mechanical energy produced by a turbine drives a refrigeration compressor |
| 04/08/1980 | USRE30252 High temperature heat recovery in refrigeration |
| 11/20/1979 | CA1066525A2 Coordinated heat pump system |
| 11/20/1979 | CA1066464A1 Snap-toggle hinge |
| 10/23/1979 | US4171621 Freeze protection device in heat pump system |
| 10/23/1979 | US4171619 Compressor assisted absorption refrigeration system |
| 08/21/1979 | US4165037 Apparatus and method for combined solar and heat pump heating and cooling system |
| 08/08/1979 | EP0003293A1 Method of heating with an absorption type heating pump installation |
| 01/10/1979 | EP0000217A1 Refrigerator |
| 01/02/1979 | CA1045395A1 Refrigerating process and apparatus therefor |
| 01/02/1979 | CA1045392A1 Cold generation process |
| 12/12/1978 | US4129014 Refrigeration storage and cooling tank |
| 08/22/1978 | US4107942 Cooling system |
| 07/18/1978 | US4100763 Multi-source heat pump HVAC system |
| 07/18/1978 | US4100755 Absorption refrigeration system utilizing solar energy |
| 02/28/1978 | US4075735 Snap-toggle hinge |
| 01/31/1978 | US4070870 Heat pump assisted solar powered absorption system |
| 01/24/1978 | US4069687 Refrigeration evaporative booster combination |
| 09/20/1977 | US4048810 Refrigerating process and apparatus therefor |
| 07/26/1977 | US4037426 Cold producing process |
| 06/28/1977 | US4031712 Combined absorption and vapor-compression refrigeration system |
| 04/19/1977 | US4018583 Vapor compression, heat exchanging |
| 04/12/1977 | US4016657 Heat pump freeze drying system |
| 04/05/1977 | US4015439 Cooling process for subambient and above ambient temperatures |
| 11/09/1976 | US3990264 Refrigeration heat recovery system |
| 05/04/1976 | US3953983 Refrigeration method and refrigerating apparatus for carrying out the method |