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Patent:DE873456
| Patent: | DE 873456 |
| Title: | Zehnerschaltung für Rechenmaschinen u. dgl. |
| Date: | 28.08.1923 |
| Place: | Danzig |
| Country: | Germany |
| Person: | |
| Company: | Gutschow und Co (P). GmbH |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE873456 |
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