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Patent:US939221
| Patent: | US 939221 |
| Title: | Computing Machine |
| Date: | 09.11.1909 |
| Place: | |
| Country: | USA |
| Person: | J. M. Daly |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US939221 (espacenet), US939221 (uspto) |
Aus der Patentschrift US939221