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Patent:CH205989
| Patent: | CH 205989 |
| Title: | Mechanischer Drehmomentverstärker |
| Date: | 15.07.1939 |
| Place: | Kiel |
| Country: | Switzerland |
| Person: | |
| Company: | Electroacustic GmbH |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  CH205989 |
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