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Patent:US1190233
| Patent: | US 1190233 |
| Title: | Combined type writing and computing machine |
| Date: | 04.07.1916 |
| Place: | Harford, CT und New York |
| Country: | USA |
| Person: | Hart, Frederick (P) |
| Company: | Underwood (P) Computing Machine Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1190233 (espacenet), US1190233 (uspto) |
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