Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5169123 | Steel ball valve | Roger Martin | 1992-12-08 |
| 4575045 | Rotary cock with generally spherical valve member | Roger Martin | 1986-03-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5169123 | Steel ball valve | Roger Martin | 1992-12-08 |
| 4575045 | Rotary cock with generally spherical valve member | Roger Martin | 1986-03-11 |