Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12391353 | Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation | John O. Scherer, III, Andrew Gunderson | 2025-08-19 |
| 11981411 | Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation | John O. Scherer, III, Andrew Gunderson | 2024-05-14 |
| 11713102 | Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation | John O. Scherer, III, Andrew Gunderson | 2023-08-01 |
| 11459074 | Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation | John O. Scherer, III, Andrew Gunderson | 2022-10-04 |
| 9745948 | Marine propeller and method of design thereof | — | 2017-08-29 |
| 7637722 | Marine propeller | David Dewitt, Jeremy L. Alby | 2009-12-29 |
| 7086836 | Dual rate torque transmitting device for a marine propeller | Mitesh B. Sheth, Michael P. Mihelich, John A. Tuchscherer, Daniel J. Schlagenhaft | 2006-08-08 |
| 6340290 | Controllable pitch propeller with a fail safe increased pitch movement | Carl Gerard Schott | 2002-01-22 |
| 6068529 | Marine propulsion unit with dual water inlet structure | Robert B. Weronke, Michael A. Karls, Donald F. Harry | 2000-05-30 |
| 5902160 | Twin propeller marine propulsion unit | Robert B. Weronke, Michael A. Karls, Donald F. Harry | 1999-05-11 |
| 5791950 | Twin propeller marine propulsion unit | Robert B. Weronke, Michael A. Karls, Donald F. Harry | 1998-08-11 |
| 5290147 | Variable pitch marine propeller with shift biasing and synchronizing mechanism | Michael A. Karls, Ronald M. Steiner | 1994-03-01 |
| 5236310 | Marine propeller with performance pitch, including five blade version | Ronald M. Steiner | 1993-08-17 |
| 5219272 | Variable pitch marine propeller with hydrodynamic shifting | Ronald M. Steiner, Michael A. Karls | 1993-06-15 |
| 5104292 | Marine propeller with performance pitch, including five blade version | Ronald M. Steiner | 1992-04-14 |
| D319210 | Five blade marine propeller | John E. Duprey, Edward M. Thull | 1991-08-20 |
| 4993151 | Method of making an easily removed marine propeller | Ronald M. Steiner, Hubert S. Gilgenbach, Terence C. Reinke | 1991-02-19 |
| 4925369 | Easily removed marine propeller | Ronald M. Steiner, Hubert S. Gilgenbach, Terence C. Reinke | 1990-05-15 |
| 4897061 | Gearcase exhaust vent for a marine propulsion system | Ronald M. Steiner | 1990-01-30 |
| 4789303 | Marine propeller carry handle and emergency spare kit | Michael E. Frazzell, William J. Gius | 1988-12-06 |
| 4331429 | Symmetrical propeller | Ronald M. Steiner, Daniel G. Wilcox | 1982-05-25 |