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Patent:US184493
| Patent: | US 184493 |
| Title: | Ellipso-Pantograph |
| Date: | 21.11.1876 |
| Place: | |
| Country: | USA |
| Person: | A. Anderson |
| Company: | |
| Internal Links: | Ellipsograph |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US184493 (espacenet), US184493 (uspto) |
Aus der Patentschrift US184493