RS

Robert J. Spadafora

UN Unknown: 1 patents #172 of 2,033Top 9%
📍 Toronto, CA: #40 of 219 inventorsTop 20%
Overall (1994): #73,219 of 165,921Top 45%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5301589 Violin bow guide Philipp Kraemer, Malcolm B. Stephens 1994-04-12