Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5624101 | Dual seal valve | — | 1997-04-29 |
| 5542645 | Dual seal valve | — | 1996-08-06 |
| 5494256 | Dual seal ball valve | — | 1996-02-27 |
| 5445359 | Gate valve | — | 1995-08-29 |
| 5338003 | Dual seal ball valve | — | 1994-08-16 |
| 5320327 | Gate valve | — | 1994-06-14 |
| 5094272 | Adjustable orifice plate seal | James H. Foster | 1992-03-10 |
| 5090661 | Gate valve | Glenn C. Parks, Jr., C. Mack Ellison, William L. Godare | 1992-02-25 |
| 5050842 | Valve seal strip orifice fitting | James H. Foster | 1991-09-24 |
| 5042531 | Energized seal for orifice plate | James H. Foster | 1991-08-27 |
| 4923171 | Gate valve having a secondary seal | — | 1990-05-08 |
| 4569540 | Piping suspender with metal-to-metal seal | — | 1986-02-11 |
| 4566671 | Gate valve having a secondary seal | — | 1986-01-28 |
| 4377273 | Gate valve having a secondary seal | — | 1983-03-22 |