Inventor · disambiguated record

Haijun Lao

Also filed as: LAO HAIJUN

1 granted patent·0 citations·filing 2022–2022

3Inventor score

Technology areasE02B

Files withCHINA POWER CONSTRUCTION GROUP GUIYANG SURVEY DESIGN AND RES INSTITUTE CO LTD1

Top patents by PatentIndex Score

1 record

0138US12134872B2High-efficient swift stepless layering water taking gate deviceCHINA POWER CONSTRUCTION GROUP GUIYANG SURVEY DESIGN AND RES INSTITUTE CO LTD·Filed 2022·Granted Nov 5, 2024·0 cites·14 claims

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