DP

Donald H. Perkins

OE Otis Engineering: 2 patents #1 of 5Top 20%
📍 Allen, TX: #3 of 28 inventorsTop 15%
🗺 Texas: #496 of 5,527 inventorsTop 9%
Overall (1994): #35,125 of 165,921Top 25%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5293551 Monitor and control circuit for electric surface controlled subsurface valve system Thomas M. Deaton 1994-03-08
5275038 Downhole reeled tubing inspection system with fiberoptic cable Phillip S. Sizer, Robert Arthur Rademaker 1994-01-04