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Patent:CN2467331U
| Patent: | CN 2467331U |
| Title: | Two-leg Ellipsograph |
| Date: | 26.12.2001 |
| Place: | |
| Country: | China |
| Person: | Wang Zhijian |
| Company: | |
| Internal Links: | Ellipsograph |
| Keywords: | |
| Link to the patent office: (without guarantee) |  CN2467331U |
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