Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5335946 | Cooperating combination of a gland and a grip ring installed in restrained sealed bolted joints of fluid piping systems including both plastic pipe and metallic pipe | George Denison | 1994-08-09 |
| 4955641 | Pipe seals used in underground sealed distribution systems | — | 1990-09-11 |
| 4689883 | Pipe cutting device | — | 1987-09-01 |