Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8333231 | Braze or solder reinforced moineu stator | Michael Hooper, James W. Estep, Daniel H. Symonds, John Clyde Wade, Glennon Allmon Wheeler | 2012-12-18 |
| 7950914 | Braze or solder reinforced Moineau stator | Michael Hooper, James W. Estep, Daniel H. Symonds, John Clyde Wade, Glennon Allmon Wheeler | 2011-05-31 |
| 5535838 | High performance overlay for rock drilling bits | Madapusi K. Keshavan, Kuttaripalayam T. Kembaiyan, Robert C. Tucker, Jr., Melvin D. Mendenhall, Jean M. Quets | 1996-07-16 |
| 5402858 | O-ring seal for rock bit bearings | Michael Hooper, Madapusi K. Keshavan, Mark J. Hommel | 1995-04-04 |