RR

Ralph S. Robertson

KE Keltech: 1 patents #3 of 5Top 60%
Stryker: 1 patents #897 of 1,405Top 65%
Overall (All Time): #2,311,004 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5136469 Powered surgical handpiece incorporating sealed multi semiconductor motor control package Steven J. Carusillo, John M. Izenbaard 1992-08-04
4970373 Electronic temperature control system for a tankless water heater Kenneth E. Lutz, II 1990-11-13