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Patent:US1844905
| Patent: | US 1844905 |
| Title: | Planimeter for computing forces |
| Date: | 09.02.1932 |
| Place: | |
| Country: | USA |
| Person: | Schweydar, Wilhelm (P) |
| Company: | Askania (P) |
| Internal Links: | Planimeter |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1844905 (espacenet), US1844905 (uspto) |
Aus der Patentschrift US1844905
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