Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4699387 | Sealing means with central elastomeric member | — | 1987-10-13 |
| 4597413 | Coupling apparatus | — | 1986-07-01 |
| 4287914 | Self sealing coupling with full flow relief valve | William C. Marrison | 1981-09-08 |