MD

Maciej Dobrowolski

📍 Bielawa, PL: #2 of 6 inventorsTop 35%
Overall (All Time): #2,835,944 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10167966 Ventilating valve for a sewer pipe — 2019-01-01