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Patent:DE205793
| Patent: | DE 205793 |
| Title: | Addiermaschine |
| Date: | 08.02.1907 |
| Place: | Philadelphia, USA |
| Country: | Germany |
| Person: | Johantgen, Oliver David (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE205793 |
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