Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249360 | Method of reconditioning valves | Alvin J. Matthews | 1993-10-05 |
| 5129145 | Valve reconditioning process | Alvin J. Matthews | 1992-07-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249360 | Method of reconditioning valves | Alvin J. Matthews | 1993-10-05 |
| 5129145 | Valve reconditioning process | Alvin J. Matthews | 1992-07-14 |