Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817461 | Clutch mechanism with overtravel capability | Kass W. Sawyer, John A. Tuchscherer | 2004-11-16 |
| 6544083 | Shift mechanism for a marine propulsion system | Kass W. Sawyer | 2003-04-08 |
| 6478543 | Torque transmitting device for mounting a propeller to a propeller shaft of a marine propulsion system | John A. Tuchscherer, Daniel J. Schlagenhaft, Michael A. Karls, Robert B. Weronke, Douglas A. Kiesling +3 more | 2002-11-12 |
| 6068529 | Marine propulsion unit with dual water inlet structure | Robert B. Weronke, Michael A. Karls, Roger E. Koepsel | 2000-05-30 |
| 5902160 | Twin propeller marine propulsion unit | Robert B. Weronke, Michael A. Karls, Roger E. Koepsel | 1999-05-11 |
| 5890938 | Marine counter-rotational propulsion system | Edward C. Eick, Robert B. Weronke, Woody Smith, Hubert S. Gilgenbach | 1999-04-06 |
| 5791950 | Twin propeller marine propulsion unit | Robert B. Weronke, Michael A. Karls, Roger E. Koepsel | 1998-08-11 |