Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9802686 | Sailboat accessory paddle head | — | 2017-10-31 |
| 6746018 | Shaft seal | Michael L. Lewis, Christopher A. Carrigan, Erwin R. Carrigan | 2004-06-08 |
| 6663313 | Mounting system for speed reducers | Michael L. Lewis, Erwin R. Carrigan, Christopher A. Carrigan | 2003-12-16 |
| 5341595 | Environmental chamber for plant growth analysis | William E. Bartley, Adrian O. Rule, III | 1994-08-30 |