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Patent:CH138449
| Patent: | CH 138449 |
| Title: | Einrichtung zur Auswertung von statistischen Aufzeichnungen |
| Date: | 16.05.1930 |
| Place: | Genf |
| Country: | Switzerland |
| Person: | Borel, Charles (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  CH138449 |
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