Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4535970 | Top entry ball valve | — | 1985-08-20 |
| 4331319 | Butterfly valve | Anthony C. Summers | 1982-05-25 |
| 4202365 | Fire tested butterfly valve | Tadashi Aoki, James F. Donnelly | 1980-05-13 |