Patents
一种拱形沿空留巷充填墙体结构
- Disigner of the Invention:张农,花锦波,Xiaowei Feng,洪昊,师超民
- Type of Patent:国际
- State of Patent:专利授权
- Application Number:201320035295.7
- Number of Inventors:6
- Service Invention or Not:no
- Application Date:2013-01-23
- Authorization Date:2013-07-17
- First Author:zhengxigui
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