Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5117871 | Flap valve | Eric P. Austin | 1992-06-02 |
| 4738432 | Fluid flow control valves | Malcolm C. Hanson, Kenneth J. Richardson | 1988-04-19 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5117871 | Flap valve | Eric P. Austin | 1992-06-02 |
| 4738432 | Fluid flow control valves | Malcolm C. Hanson, Kenneth J. Richardson | 1988-04-19 |