Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4708160 | Post assembly for buried valve having an above ground actuator | Steve M. Sharp, John R. Holstrom, John V. Ballun | 1987-11-24 |
| 4702275 | Post assembly for a buried valve | John V. Ballun | 1987-10-27 |
| 4653531 | Support for underground valve indicator | — | 1987-03-31 |
| 4497340 | Seal for post indicator valve assembly | — | 1985-02-05 |
| 4448148 | Post indicating valve assembly indicator | — | 1984-05-15 |
| 4411288 | Valve position indicator with variable indicator plates | — | 1983-10-25 |