Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D344574 | Locking valve handle | Cal R. Brown, Robert C. Stewart | 1994-02-22 |
| 5213308 | Valve with handle latch/lock | Cal R. Brown, Peter C. Williams | 1993-05-25 |
| D317815 | Valve body part | Peter C. Williams | 1991-06-25 |
| 4887644 | Tee fitting integrally formed in valve body | Peter C. Williams | 1989-12-19 |