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Patent:FR683790
| Patent: | FR 683790 |
| Title: | Perfectionnements aux machines à calculer |
| Date: | 10.03.1930 |
| Place: | |
| Country: | France |
| Person: | |
| Company: | Monroe (P) Calculating Machine Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  FR683790 |
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