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Patent:US1514323
| Patent: | US 1514323 |
| Title: | Sine and angle calculator |
| Date: | 04.11.1924 |
| Place: | |
| Country: | USA |
| Person: | Kirchner John J |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1514323 (espacenet), US1514323 (uspto) |
Aus der Patentschrift US1514323
- DATUM: 04.11.1924
- TITEL: Sine and angle calculator