| Patents for F25D 5 - Devices using endothermic chemical reactions, e.g. using frigorific mixtures (604) | |
|---|---|
| 08/1976 | |
| 08/17/1976 | US3974658 Contact refrigeration unit |
| 07/1976 | |
| 07/20/1976 | US3970068 Heat exchange package for food |
| 05/1976 | |
| 05/18/1976 | US3957472 Chemical heat transfer unit |
| 04/1976 | |
| 04/13/1976 | US3950158 Refrigeration |