DR

Dale W. Richardson

RA Richardson & Associates: 2 patents #1 of 4Top 25%
ID International Research And Development: 1 patents #1 of 3Top 35%
📍 Portage, MI: #1 of 26 inventorsTop 4%
🗺 Michigan: #116 of 3,452 inventorsTop 4%
Overall (1989): #11,227 of 140,708Top 8%
3
Patents 1989

Issued Patents 1989

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4878494 Cardio-valve assist unit and method for performing cardio-valve replacement surgery James L. Phillips, J. Donald Hill 1989-11-07
4852200 Device for cleaning electric knives James L. Phillips, Lawrence M. Silverman 1989-08-01
4834097 Cardio-valve assist unit and method for performing cardio-valve replacement surgery James L. Phillips, J. Donald Hill 1989-05-30