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Patent:US2665069
| Patent: | US 2665069 |
| Title: | Equation solving mechanism |
| Date: | 05.01.1954 |
| Place: | |
| Country: | USA |
| Person: | |
| Company: | Librascope (P) |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2665069 (espacenet), US2665069 (uspto) |
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