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Patent:GB205870
| Patent: | GB 205870 |
| Title: | Improvements in or relating to calculating machines |
| Date: | 24.10.1923 |
| Place: | |
| Country: | Great Britain |
| Person: | Landsiedel, Harry (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  GB205870 |
Aus der Patentschrift GB205870
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