Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5754446 | Method and apparatus for optimizing performance of a kaplan turbine | Richard A. Johnson, Ronald E. Deitz | 1998-05-19 |
| 4780051 | Hydraulic turbine aeration apparatus | — | 1988-10-25 |
| 4515524 | Draft tube for hydraulic turbine | — | 1985-05-07 |
| 4513772 | Automatic hose reel | — | 1985-04-30 |