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| Number | Title | Issue Date |
| 4537349 | Motor vehicle with an internal-combustion engine and with means for heating a payload space The invention relates to a motor vehicle with an internal-combustion engine, with a heatable payload space and with a pipe flowed by air and leading into the atmosphere, which is divided into two pipe branches. A first heat exchanger flowed by the waste g... | 08/27/1985 |