Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843949 | Fluid control valve with variable pressure gain | Michael D. Herder, Richard P. Heintz | 1989-07-04 |
| 4646786 | Fluid control valves with angled metering ports | Michael D. Herder | 1987-03-03 |
| 4645178 | Redundant drive mechanisms for a direct drive valve and force motor assembly | Eugene J. Martin, James N. Tootle, Walter Joseph Fallows, III, Robert D. Vanderlaan | 1987-02-24 |