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Patent:US1311041
| Patent: | US 1311041 |
| Title: | Calculating machine |
| Date: | 22.07.1919 |
| Place: | Chicago und New York |
| Country: | USA |
| Person: | Carlin, Samuel E. (P) |
| Company: | Underwood (P) Computing Machine Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1311041 (espacenet), US1311041 (uspto) |
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