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Patent:DE1572911
| Patent: | DE 1572911 |
| Title: | Demonstrations-Rechenstab |
| Date: | 30.07.1970 |
| Place: | |
| Country: | Germany |
| Person: | |
| Company: | Dennert und Pape (P) |
| Internal Links: | Aristo |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE1572911 |
Aus der Patentschrift DE1572911
- Patent Family: ( Patent:DE1572911, Patent:DE1572911 )