Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6604317 | Fly trap | — | 2003-08-12 |
| 5649844 | Dual drive for power boats | Philip C. Caricof, Warren H. Robbins, Lawrence C. Smith | 1997-07-22 |
| 5018996 | Flow control fluid coupling marine transmission | Thomas C. Bowen | 1991-05-28 |
| 5009621 | Torque splitting drive train mechanism for a dual counterrotating propeller marine drive system | Herbert A. Bankstahl, Lyle M. Forsgren, Wayne T. Beck, John M. Griffiths | 1991-04-23 |
| 4964823 | Stern drive lift and trim system | Herbert A. Bankstahl, John M. Griffiths, Lyle M. Forsgren, Wayne T. Beck | 1990-10-23 |
| 4940436 | Marine drive system with inboard mounted engine and depending drive unit | — | 1990-07-10 |
| 4939660 | Fuel conserving cruise system for a marine drive unit | Herbert A. Bankstahl, John M. Griffiths, Lyle M. Forsgren, Wayne T. Beck | 1990-07-03 |
| 4932367 | Four-stroke V-engine with central exhaust and intake manifolds | Herbert A. Bankstahl, Wayne T. Beck, Anthony L. Debates | 1990-06-12 |
| 4932907 | Chain driven marine propulsion system with steerable gearcase and dual counterrotating propellers | Herbert A. Bankstahl, Wayne T. Beck | 1990-06-12 |
| 4930435 | Anti-motion sickness apparatus | — | 1990-06-05 |
| 4925414 | Marine propulsion system | — | 1990-05-15 |
| 4925413 | Stern drive marine propulsion system including a chain drive mechanism | Daniel F. McCormick | 1990-05-15 |
| 4919009 | Two turbine variable speed fluid coupling marine transmission | Thomas C. Bowen | 1990-04-24 |
| 4897059 | Water pump for marine propulsion system | — | 1990-01-30 |
| 4887983 | Chain drive marine propulsion system with dual counterrotating propellers | Herbert A. Bankstahl | 1989-12-19 |
| 4887982 | Gear driven marine propulsion system with steerable gearcase and dual counterrotating propellers | Herbert A. Bankstahl | 1989-12-19 |
| 4887984 | Marine transmission with fluid coupler | — | 1989-12-19 |
| 4872859 | Lift and latch apparatus for an outboard motor | John M. Griffiths, Lyle M. Forsgren, Wayne T. Beck | 1989-10-10 |
| 4872857 | Operation optimizing system for a marine drive unit | Herbert A. Bankstahl, John M. Griffiths, Lyle M. Forsgren, Wayne T. Beck | 1989-10-10 |
| 4869692 | Outboard marine propulsion system including a chain drive mechanism | — | 1989-09-26 |
| 4865569 | Variable height marine propulsion mechanism | — | 1989-09-12 |
| 4861292 | Speed optimizing positioning system for a marine drive unit | John M. Griffiths, Wayne T. Beck | 1989-08-29 |
| 4836811 | Transom extension mounting assembly for outboard motors | John M. Griffiths, John J. Litjens | 1989-06-06 |
| 4826461 | Propeller protector | — | 1989-05-02 |
| 4820209 | Torque converter marine transmission with variable power output | — | 1989-04-11 |