CG

Chengchao Guo

S( Safekey Engineering Technology (Zhengzhou): 1 patents #7 of 11Top 65%
Overall (2021): #173,731 of 548,734Top 35%
2
Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11143027 Rectangular working well with preset pipe jacking hole and sliding back wall in water-rich stratum and construction method thereof Fuming Wang, Hongyuan Fang, Yanhui Pan, Peng Zhao 2021-10-12
11085166 Composite slotting equipment combined static pressure and vibration of polymer anti-seepage wall and using method thereof Fuming Wang, Hongyuan Fang, Peng Zhao, Yanhui Pan, Xianfeng Zhao +3 more 2021-08-10