Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4429711 | Multivalve manifold interlock and control system | — | 1984-02-07 |
| 4319492 | Pressure transmitter manifold | John E. Hewson | 1982-03-16 |
| 4182362 | Differential transmitter and manifold mounting | John E. Hewson | 1980-01-08 |