RH

Robert C. Hammett

OE Otis Engineering: 1 patents #13 of 39Top 35%
📍 Garland, TX: #14 of 79 inventorsTop 20%
🗺 Texas: #885 of 4,134 inventorsTop 25%
Overall (1989): #63,163 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4834183 Surface controlled subsurface safety valve Michael B. Vinzant, Craig D. Hines, Rennie L. Dickson 1989-05-30