RS

Richard M. Sproul

OE Otis Engineering: 7 patents #24 of 228Top 15%
Overall (All Time): #767,605 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5113939 Single bore packer with dual flow conversion for gas lift completion Colby M. Ross, Ross M. McCurley, Carter R. Young 1992-05-19
5048610 Single bore packer with dual flow conversion for gas lift completion Colby M. Ross, Ross M. McCurley, Carter R. Young 1991-09-17
4930573 Dual hydraulic set packer Andrew R. Lane 1990-06-05
4846281 Dual flapper valve assembly Sammy R. Clary, Frank Giusti, Jr. 1989-07-11
4832129 Multi-position tool and method for running and setting a packer Frank Giusti, Jr., Carter R. Young, John B. Wilkie, Jr. 1989-05-23
4813481 Expendable flapper valve Frank Giusti, Jr., Richard L. Grant, Kennedy J. Brown 1989-03-21
4671354 Well packer William David Henderson, Dhirajlal C. Patel, Dennis D. Rood 1987-06-09