RK

Richard H. Kollen

📍 Wassenaar, NL: #31 of 70 inventorsTop 45%
Overall (All Time): #3,965,758 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4633829 Rotary internal combustion engine — 1987-01-06