FR

Fredrick Richard Roland

VI Vibratech: 1 patents #6 of 9Top 70%
Overall (All Time): #3,683,457 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5749269 Dual-mode, viscous crankshaft vibration damper John George Szymanski, Robert Henry Stanley, Jr. 1998-05-12