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Patent:DE310417
| Patent: | DE 310417 |
| Title: | Rechenmaschine |
| Date: | 12.07.1913 |
| Place: | Chicago, USA |
| Country: | Germany |
| Person: | Felt, Dorr E. (P) |
| Company: | Felt und Tarrant (P) |
| Internal Links: | Comptometer |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE310417 |
Aus der Patentschrift DE310417