Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6136207 | Lifting mechanism assembly for a rotary drive assembly | Robert D. Cook, Leonard J. A. Wood | 2000-10-24 |
| 5997740 | Lifting mechanism assembly for a rotary drive assembly | Robert D. Cook, Leonard J. A. Wood | 1999-12-07 |
| 5078873 | Filter cleaning apparatus | Brent C. Black, Steven G. Coombs, John B. Ainsworth | 1992-01-07 |