Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4631536 | Multiplex submersible pump telemetry system | Donald H. Ward | 1986-12-23 |
| 4581613 | Submersible pump telemetry system | Donald H. Ward | 1986-04-08 |
| 4428811 | Rapid rate reactive sputtering of a group IVb metal | William D. Sproul | 1984-01-31 |
| 4202225 | Power tongs control arrangement | Loren B. Sheldon, Donald H. Ward | 1980-05-13 |
| 4187546 | Computer-controlled oil drilling rig having drawworks motor and brake control arrangement | James P. Heffernan, Loren B. Sheldon, Donald H. Ward | 1980-02-05 |