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Patent:US746427
| Patent: | US 746427 |
| Title: | Planimeter |
| Date: | 08.12.1903 |
| Place: | |
| Country: | USA |
| Person: | F. R. Williams |
| Company: | |
| Internal Links: | Planimeter |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US746427 (espacenet), US746427 (uspto) |
Aus der Patentschrift US746427