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Patent:DE6939419
| Patent: | DE 6939419 |
| Title: | Zehnerschaltvorrichtung an Rechenmaschinen und dergl. |
| Date: | 27.05.1971 |
| Place: | Wilhelmshaven |
| Country: | Germany |
| Person: | |
| Company: | Olympia (P) Werke AG |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE6939419 |
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