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Patent:GB191016236
| Patent: | GB 191016236 |
| Title: | Improvements in Calculating Machines |
| Date: | 15.06.1911 |
| Place: | Vienna |
| Country: | Great Britain |
| Person: | Adolf Jahn |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  GB191016236 |
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