Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5791629 | Bushing-less stem guided control valve | William E. Wears, Karl F. Putman | 1998-08-11 |
| 5230498 | Live load packing system | William E. Wears | 1993-07-27 |
| 5129625 | Live load packing system | William E. Wears | 1992-07-14 |
| 5056757 | Packing containment for live loaded fugitive emission seals | — | 1991-10-15 |