Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5642963 | Spillway gate system | — | 1997-07-01 |
| 5538360 | Crest gate operating system | — | 1996-07-23 |
| 5092707 | Crest gate operating system | — | 1992-03-03 |
| 4804855 | Hydromotive machine apparatus and method of constructing the same | — | 1989-02-14 |
| 4780024 | Crest gate | Charles E. Snow | 1988-10-25 |
| 4772157 | Liquid level control system and method of operating the same | — | 1988-09-20 |
| 4755690 | Hydroelectric power installation and turbine generator apparatus therefor | — | 1988-07-05 |
| 4754155 | Hydroelectric generator having retractable runner | — | 1988-06-28 |