DL

Deen Li

📍 Shandong, CN: #85 of 317 inventorsTop 30%
Overall (2020): #492,482 of 565,922Top 90%
1
Patents 2020

Issued Patents 2020

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10871254 Water-soluble pipe-plugging device and pipe plugging method thereof 2020-12-22