Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE39973 | Metallic seal | John Loyd Spence | 2008-01-01 |
| 6409180 | Metallic seal | John Loyd Spence | 2002-06-25 |
| 5772254 | Modular joint, with a replaceable sealing sleeve | Robert Alan Barrett, Jeffrey E. Swensen | 1998-06-30 |
| 5368069 | Conduit joint assembly | — | 1994-11-29 |