塌陷区铁路或公路桥抗大变形加固方法
- Disigner of the Invention:杨洋
- Note:杨洋
- Type of Patent:国际
- State of Patent:专利撤回
- Application Number:200820032104.0
- Authorization number:CN 201165661Y
- Number of Inventors:2
- Service Invention or Not:no
- Application Date:2008-03-11
- Authorization Date:2008-12-17
- First Author:yuguangyun
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塌陷区抗变形公路路面结构
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