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Patent:US1933335
| Patent: | US 1933335 |
| Title: | Tabulating machine |
| Date: | 31.10.1933 |
| Place: | New York |
| Country: | USA |
| Person: | Peirce, John Royden (P) |
| Company: | IBM (P) |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1933335 (espacenet), US1933335 (uspto) |
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