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Patent:US1005774
| Patent: | US 1005774 |
| Title: | Operating mechanism foe adding machines |
| Date: | 10.10.1911 |
| Place: | Poplar Bluff, MO |
| Country: | USA |
| Person: | Hoyt, Francis R. |
| Company: | Dalton (P) Adding Machine Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1005774 (espacenet), US1005774 (uspto) |
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