Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10005530 | Device for improving the water influx towards a propeller of a watercraft | Dirk Lehmann | 2018-06-26 |
| 8944869 | Pre-nozzle for a drive system of a watercraft to improve the energy efficiency | Dirk Lehmann | 2015-02-03 |
| 8814496 | Device for reducing the drive power requirements of a watercraft | Dirk Lehmann | 2014-08-26 |
| 8430703 | Device for reducing the drive power requirement of a ship | — | 2013-04-30 |
| 8123578 | Device for reducing the power demand for the propulsion of a ship | — | 2012-02-28 |