Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6945125 | High resolution pulse count interface | Richard J. Vanderah, David L. Smid, Douglas B. Roberts | 2005-09-20 |
| 4616670 | High-low pressure pilot | John W. Duffy, Robert A. Funke | 1986-10-14 |
| 4485727 | Pressure pilot switch point device | — | 1984-12-04 |