SP

Semion Perlin

CL Canadian Patents And Development Limited: 1 patents #88 of 449Top 20%
📍 Willowdale, CA: #105 of 211 inventorsTop 50%
Overall (All Time): #4,019,717 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4534527 All weather switch for railroads Lawrence A. J. van Eyken 1985-08-13