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Patent:US1680740
| Patent: | US 1680740 |
| Title: | Printing tabulator |
| Date: | 14.08.1928 |
| Place: | Binghamton und New York |
| Country: | USA |
| Person: | Lake, Clair (P) |
| Company: | Tabulating Machine (P) Company |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1680740 (espacenet), US1680740 (uspto) |
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