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Patent:US2834289
| Patent: | US 2834289 |
| Title: | Zero printing device |
| Date: | 13.05.1958 |
| Place: | Gerstetten |
| Country: | USA |
| Person: | Haberkorn, Otto (P) |
| Company: | Walther (P) Büromaschinen GmbH |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2834289 (espacenet), US2834289 (uspto) |
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