Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4760875 | Controlling seal system in rotary regenerative air preheaters | Colin Tindall | 1988-08-02 |
| 4617451 | Inductance sensor | Colin Tindall, John C. Graham | 1986-10-14 |
| 4610297 | Controlling seal system in rotary regenerative air preheaters | Colin Tindall | 1986-09-09 |