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Patent:US2733858
| Patent: | US 2733858 |
| Title: | Entry Correction Mechanism for Printing or Computing Machines |
| Date: | 07.02.1956 |
| Place: | |
| Country: | USA |
| Person: | Anderson, W. A. (P) |
| Company: | Underwood (P) |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2733858 (espacenet), US2733858 (uspto) |
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