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Patent:GB190925766
| Patent: | GB 190925766 |
| Title: | Improvements relating to Calculating Machines |
| Date: | 15.09.1910 |
| Place: | |
| Country: | Great Britain |
| Person: | Felt, Dorr E. (P) |
| Company: | |
| Internal Links: | Comptometer |
| Keywords: | |
| Link to the patent office: (without guarantee) |  GB190925766 |
Aus der Patentschrift GB190925766
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