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Inventor profile of:

Licheng YU

City:

Daqing

Country:

China

Published Applications:

1

Last publication date:

2020-12-24

Recent patent applications by YU Licheng

Licheng YU from Daqing, CN has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2020-12-24

US20200399972A1

Fixed constructions

Wellhead sealing device of sucker-rod pumping machine

InventorID:

2943202 ⎘