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Patent:DE392574
| Patent: | DE 392574 |
| Title: | Rechenmaschine mit zwei Zaehlwerken |
| Date: | 01.01.1922 |
| Place: | Berlin |
| Country: | Germany |
| Person: | Schuster, Ernst (P) |
| Company: | |
| Internal Links: | Duplicator; Berolina |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE392574 |
Aus der Patentschrift DE392574