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铁塔角钢防弯扭失稳加固装置
2018-07-14  Hits:

First Author:田利, 郭刘潞, 曲冰
Type of Patent:发明专利
Authorization number:ZL 201610457324.7
Service Invention or Not:yes
Authorization Date:2018-01-09
Authorization Date:2018-01-09