Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6215260 | Controlling movement of linear induction motor | — | 2001-04-10 |
| 6016021 | Linear stepper motor | — | 2000-01-18 |
| 5965962 | Linear stepper motor | — | 1999-10-12 |
| 5880541 | Sensing and controlling the location of elements of a linear motor | Martyn A. Lewis | 1999-03-09 |
| 5763966 | Single plane motor system generating orthogonal movement | — | 1998-06-09 |
| 5648690 | Motor system generating orthogonal movement in a single plane | — | 1997-07-15 |
| 4890023 | Linear induction motor systems | Martyn A. Lewis | 1989-12-26 |
| 4654571 | Single plane orthogonally movable drive system | — | 1987-03-31 |
| 4642539 | Torque motor with unlimited angular excursion | — | 1987-02-10 |
| 4350478 | Bottom hole oil well pump | Paul V. Oldershaw, James E. Hansen | 1982-09-21 |
| 4215283 | Linear stepping motor | — | 1980-07-29 |