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Patent:US2902137
| Patent: | US 2902137 |
| Title: | Tabulating device |
| Date: | 01.09.1959 |
| Place: | Lexington, KY und New York |
| Country: | USA |
| Person: | Thurston H. Toeppen |
| Company: | IBM (P) |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2902137 (espacenet), US2902137 (uspto) |
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