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Patent:US2800717
| Patent: | US 2800717 |
| Title: | Drafting Instrument |
| Date: | 30.07.1957 |
| Place: | |
| Country: | USA |
| Person: | V. Debs |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2800717 (espacenet), US2800717 (uspto) |
Aus der Patentschrift US2800717
- DATUM: 30.07.1957
- TITEL: Drafting instrument