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Patent:US809019
| Patent: | US 809019 |
| Title: | Planimeter |
| Date: | 02.01.1906 |
| Place: | |
| Country: | USA |
| Person: | E. McC. Scoville |
| Company: | |
| Internal Links: | Planimeter |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US809019 (espacenet), US809019 (uspto) |
Aus der Patentschrift US809019