RC

Richard M. H. Cheng

CL Canadian Patents And Development Limited: 1 patents #88 of 449Top 20%
📍 Saint-Antoine, CA: #4 of 8 inventorsTop 50%
Overall (All Time): #2,354,771 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4540289 Automatic stirring system for film developing Rock Lee 1985-09-10
4489792 Hammer drill adapter Atef E. F. Fahim, Rock Lee 1984-12-25