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Patent:GB190310230
| Patent: | GB 190310230 |
| Title: | Improvements in slide rules |
| Date: | 17.03.1904 |
| Place: | Stein near Nuremberg |
| Country: | Great Britain |
| Person: | Alexander von Faber-Castell |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  GB190310230 |
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