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Patent:US1707094
| Patent: | US 1707094 |
| Title: | Adding Machine |
| Date: | 26.03.1929 |
| Place: | |
| Country: | USA |
| Person: | Puttemans, Hubert Auguste (P) et al |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1707094 (espacenet), US1707094 (uspto) |
Aus der Patentschrift US1707094