Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6533536 | Hydro-turbine runner | Richard K. Fisher, Jr., Robert G. Grubb, Joseph M. Cybularz, Richard K. Donelson, Mark E. Kennell | 2003-03-18 |
| 6254339 | Hydro-turbine runner | Richard K. Fisher, Jr., Robert G. Grubb, Joseph M. Cybularz, Richard K. Donelson, Mark E. Kennell | 2001-07-03 |
| 5954474 | Hydro-turbine runner | Richard K. Fisher, Jr., Robert G. Grubb, Joseph M. Cybularz, Richard K. Donelson, Mark E. Kennell | 1999-09-21 |