Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832084 | Dual graphite structured pipe | Robert W. Jennings | 1989-05-23 |
| 4791976 | Method of making dual graphite structured pipe | Robert W. Jennings | 1988-12-20 |
| 4540204 | Restrained pipe joint | Billy J. Battle, Robert M. Graham, Lawrence S. Jones, George F. Rhodes | 1985-09-10 |
| 4407893 | Polyolefin coating containing an ionomer for metal substrates | — | 1983-10-04 |