Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7416164 | Elliptical sealing surface for butterfly valve | Philip W. Eggleston, Wilbur Dean Hutchens | 2008-08-26 |
| 7296585 | Elliptical sealing surface for butterfly valve | Philip W. Eggleston, Wilbur Dean Hutchens | 2007-11-20 |
| 7080820 | Elliptical sealing surface for butterfly valve | Philip W. Eggleston, Wilbur Dean Hutchens | 2006-07-25 |