| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | United Kingdom | 5 | |
| #3 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies | |
| #3 | Rotary pistons | |
| #4 | Unspecified technologies | |
| #5 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Riordan Mathew B | 3 |
| #2 | Estep James Wilson | 2 |
| #3 | Jeter John Doise | 1 |
| #4 | Lee Arley G | 1 |
| #5 | Mcclure Tommy L | 1 |
| #6 | Burton Clifton A | 1 |
| #7 | Brumley Ralph E | 1 |
| #8 | Burton Clifton Allen | 1 |
| #9 | Poston John B | 1 |
| #10 | Bentley Richard H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4665998A | Mechanical well jar | |
| AU1347383A | Mud pulse valve for measurement - while - drilling system | |
| US4258801A | Dump valve for use with downhole motor | |
| US4273464A | Wire line anchor | |
| US4207037A | Stator for a downhole fluid operated motor and method of assembling the same | |
| US4121657A | Position indicator for downhole tool | |
| US4080094A | Downhole motor rotor supports | |
| US4141605A | Bearing | |
| US4000549A | Stabilizer |