RD

Ralph M. Duckworth

LB Lever Brothers: 1 patents #16 of 90Top 20%
📍 Tarporley, GB: #1 of 2 inventorsTop 50%
Overall (1989): #67,922 of 140,708Top 50%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4837007 Fluoridating oral cavity Andrew Murray 1989-06-06