Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5727595 | Changeover valve system having a cross drive member | — | 1998-03-17 |
| 5727596 | Changeover valve | — | 1998-03-17 |
| 5549138 | Changeover valve system | — | 1996-08-27 |
| 4844410 | Adjustable seat assembly for a valve | — | 1989-07-04 |
| 4562860 | Ball valve having easy maintenance features for extreme environments | John Walter, Bruce M. Costa | 1986-01-07 |