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Patent:US1015842
| Patent: | US 1015842 |
| Title: | Calculating Machine |
| Date: | 30.01.1912 |
| Place: | |
| Country: | USA |
| Person: | Daemen-Schmid, Heinrich (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1015842 (espacenet), US1015842 (uspto) |
Aus der Patentschrift US1015842