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Patent:US2646747
| Patent: | US 2646747 |
| Title: | Counter for numbering and measuring devices |
| Date: | 28.07.1953 |
| Place: | Zandvoort und Leiden |
| Country: | USA |
| Person: | Theodorus Reumerman Willem H.T. Helmig |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2646747 (espacenet), US2646747 (uspto) |
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