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Patent:DE666599
| Patent: | DE 666599 |
| Title: | Von einem Motor angetriebene Rechen- oder Buchungsmaschine |
| Date: | 24.10.1938 |
| Place: | Rotterdam |
| Country: | Germany |
| Person: | Dirk Veenman |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE666599 |
Aus der Patentschrift DE666599