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Patent:US874107
| Patent: | US 874107 |
| Title: | Digit Repeating Mechanism for Adding Machines |
| Date: | 17.12.1907 |
| Place: | |
| Country: | USA |
| Person: | McFarland, Charles Numan (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US874107 (espacenet), US874107 (uspto) |
Aus der Patentschrift US874107