Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4315630 | Sealing ring for spigot and socket pipe joint | Robert W. Heisler, Antonio Maldarella, Jr., Gilbert W. VanHoy | 1982-02-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4315630 | Sealing ring for spigot and socket pipe joint | Robert W. Heisler, Antonio Maldarella, Jr., Gilbert W. VanHoy | 1982-02-16 |