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Patent:CN2133879u
| Patent: | CN 2133879u |
| Title: | General Building Construction Slide Rule |
| Date: | 19.05.1993 |
| Place: | |
| Country: | China |
| Person: | Zhangda Peng |
| Company: | |
| Internal Links: | Rechenschieber |
| Keywords: | |
| Link to the patent office: (without guarantee) |  CN2133879u |
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