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Patent:GB191317520
| Patent: | GB 191317520 |
| Title: | Improvements in and relating to Calculating Machines |
| Date: | 09.04.1914 |
| Place: | Brunswick |
| Country: | Great Britain |
| Person: | Trinks, Franz (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  GB191317520 |
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