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Patent:DE246538
| Patent: | DE 246538 |
| Title: | Rechenmaschine, insbesondere für die Multiplikation |
| Date: | 04.05.1912 |
| Place: | Steglitz und Berlin und Zwickau |
| Country: | Germany |
| Person: | Rauchwetter, Franz (P), Riegel, Heinrich (P), Freytag, Ernst Emil (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE246538 |
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