Issued Patents 1994
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5355042 | Magnetic bearings for pumps, compressors and other rotating machinery | David W. Lewis, Robert R. Humphris, Eric H. Maslen, Paul E. Allaire | 1994-10-11 |
| 5347190 | Magnetic bearing systems | David W. Lewis, Robert R. Humphris, Eric H. Maslen, Paul E. Allaire, Steven W. Yates | 1994-09-13 |
| 5343955 | Tandem wellbore safety valve apparatus and method of valving in a wellbore | — | 1994-09-06 |
| 5316084 | Well tool with sealing means | Douglas J. Murray, Robert Coon, Mark E. Hopmann, Steve Jennings, Timothy R. Tips | 1994-05-31 |
| 5285035 | Dust proof electrical switch | William D. Crow | 1994-02-08 |