DR

Donald E. Ritchie

DI Dresser Industries: 1 patents #8 of 50Top 20%
📍 Houston, TX: #210 of 924 inventorsTop 25%
🗺 Texas: #885 of 4,134 inventorsTop 25%
Overall (1989): #119,075 of 140,708Top 85%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4852654 Wireline hydraulic isolation packer system Robert K. Buckner, Norman W. Read 1989-08-01