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Patent:GB391869
| Patent: | GB 391869 |
| Title: | Calculating Apparatus |
| Date: | 02.10.1930 |
| Place: | Detroit, Michigan |
| Country: | Great Britain |
| Person: | |
| Company: | Burroughs (P) Adding Machine Co. |
| Internal Links: | Hopkins, Hubert |
| Keywords: | |
| Link to the patent office: (without guarantee) |  GB391869 |
Aus der Patentschrift GB391869