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Patent:US2066764
| Patent: | US 2066764 |
| Title: | Tabulating Machine |
| Date: | 05.01.1937 |
| Place: | London und New York, NY |
| Country: | USA |
| Person: | Charles Campbell |
| Company: | IBM (P) |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2066764 (espacenet), US2066764 (uspto) |
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