| Patents for B63H 21 - Use of propulsion power plant or units on vessels (6,542) |
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| 04/16/1998 | WO1998015454A1 Outboard motor with improved jet propulsion unit |
| 04/09/1998 | WO1998014365A1 Apparatus for directing boat exhaust fumes |
| 04/07/1998 | US5735718 Drive unit for boats |
| 04/02/1998 | WO1998013257A1 Universal marine drive apparatus and uses thereof |
| 04/01/1998 | CN2277371Y Energy-saving double-power-driven device for small craft |
| 03/31/1998 | US5732685 Fuel supply system for watercraft |
| 03/31/1998 | US5732644 Device for the exhaust and ventilation system on ships |
| 03/10/1998 | US5724907 Watercraft steering mounted accessory control assembly |
| 02/25/1998 | EP0825104A2 Vessel provided with solar cells |
| 02/25/1998 | EP0824450A1 Device for transmitting thurst |
| 02/25/1998 | EP0824449A1 Method of optimizing the efficiency of ships with bow and stern propellers and arrangement for adjusting the speed of rotation of the bow propeller |
| 02/24/1998 | US5720638 Engine drive shaft coupler for personal watercraft |
| 02/24/1998 | US5720636 Marine propulsor |
| 02/19/1998 | DE19632421A1 Impulse turbine for vehicle |
| 02/17/1998 | US5719358 Arrangement for muffling the exhaust sound of a boat motor |
| 02/13/1998 | CA2212857A1 Vessel provided with solar cells |
| 02/12/1998 | WO1998000634A3 Method and apparatus for calibrating a position sensor used in engine control |
| 02/12/1998 | DE19633421A1 Ship propulsion drive with vibration-damped drive motor mounting |
| 02/03/1998 | US5714713 Acoustic absorbing device |
| 02/03/1998 | US5713727 Multi-stage pump powered by integral canned motors |
| 02/03/1998 | US5713299 Submersible boat |
| 01/28/1998 | EP0820928A2 Watercraft steering mounted accessory control assembly |
| 01/20/1998 | CA2080100C Humanly operable, recreational, readily disassemblable water cycle |
| 01/14/1998 | EP0817743A1 A mount structure for supporting an electric apparatus on a ground base |
| 01/13/1998 | US5707264 Jet propulsion boat |
| 01/08/1998 | WO1998000634A2 Method and apparatus for calibrating a position sensor used in engine control |
| 01/06/1998 | US5705769 Vibrationally damped structure |
| 01/02/1998 | DE19627323A1 Gondelartig anzuordnender Schiffsantrieb mit Synchronmotor Gondola-like to be arranged ship driven by a synchronous motor |
| 12/31/1997 | WO1997049605A1 Pod-like ship propulsion system with synchronous motor |
| 12/31/1997 | WO1997049603A1 A marine oscillatory-motion propulsion system |
| 12/30/1997 | US5702276 Watercraft catalytic exhaust system |
| 12/30/1997 | US5702274 Flotatation device propelled by human-powered ski machine |
| 12/23/1997 | US5700172 Submerged marine exhaust system |
| 12/23/1997 | US5700171 Speed control system |
| 12/23/1997 | US5700168 Electronic ignition interruption apparatus |
| 12/23/1997 | US5699749 Exhaust system, hull, and speed indicator for watercraft |
| 12/23/1997 | CA2069803C Accurate tuning of marine control systems |
| 12/11/1997 | WO1997046445A1 Marine propulsion and steering unit |
| 12/09/1997 | US5695371 Cradle type engine mount for watercraft |
| 12/02/1997 | US5692992 Shift assist and engine interrupter apparatus |
| 11/18/1997 | US5688151 Collapsible boat powered by a land vehicle |
| 11/11/1997 | US5685802 Engine control system |
| 10/21/1997 | US5679036 Reversible motor mount for canoe |
| 10/14/1997 | US5676575 Exhaust system for watercraft |
| 10/07/1997 | US5674099 Outboard drive exhaust system |
| 09/09/1997 | US5664978 Propulsion system for a vehicle |
| 09/09/1997 | US5664976 Outboard motor |
| 09/09/1997 | US5664515 Ventilating arrangement for watercraft |
| 09/04/1997 | WO1997032157A1 Method in the utilization of boil-off from liquid gas and apparatus for carrying out the method |
| 09/03/1997 | EP0792234A1 Marine engine mounting system |
| 09/03/1997 | EP0792233A1 Portable apparatus for using bicycles as a type of watercraft |
| 08/28/1997 | WO1997030892A1 Method of optimizing the efficiency of ships with bow and stern propellers and arrangement for adjusting the speed of rotation of the bow propeller |
| 08/26/1997 | US5660134 Amphibious vehicle cocoon |
| 08/21/1997 | DE19605865A1 Sailing boat with solar modules generating electric energy |
| 08/20/1997 | EP0789658A1 A control device for achieving optimum use of the energy which is produced by a vessel's main energy source |
| 08/12/1997 | US5656376 Anti-fouling, cavitation resistance, vibration damping |
| 08/12/1997 | US5655937 Water-lift muffler evacuation device |
| 08/06/1997 | CN1156498A Vibrasion-compensating apparatus |
| 07/31/1997 | WO1997027103A1 Control and manoeuvring stick for a vessel |
| 07/31/1997 | WO1997027102A1 Method and apparatus for removing a propeller assembly from and for mounting the same in an opening in the bottom of a swimming vessel |
| 07/24/1997 | DE19647948A1 Gondola propelling system for ship or windmill |
| 07/23/1997 | CN1154932A Seawave ship |
| 07/16/1997 | CN2257794Y Field oil feeder |
| 07/15/1997 | US5647779 Manifold and water trap system for marine engine |
| 07/03/1997 | WO1997023383A1 Seawater and exhaust system in an engine installation in a boat |
| 07/02/1997 | EP0781953A1 Composite duct system |
| 06/17/1997 | CA2071197C Method and apparatus for power transmission to a surface driving propeller mechanism and use of a turbine between the driving engine and propeller mechanism |
| 06/10/1997 | US5637022 Switch apparatus for marine propulsion unit |
| 06/05/1997 | WO1997013682A3 Ship drive with a driving engine and a directly driven propeller shaft |
| 06/04/1997 | EP0776431A1 Vibration-compensating apparatus |
| 06/03/1997 | US5634832 Induction system for four-cycle watercraft engine |
| 05/28/1997 | EP0775067A1 An arrangement for muffling the exhaust sound of a boat motor |
| 05/28/1997 | CN1150571A Infrared implicit exhaust system for main engine of medium or high speed ship |
| 05/27/1997 | US5632657 Multi-position adjustable trolling motor tiller handle |
| 05/02/1997 | EP0770544A1 Propulsion plant for a L.N.G. carrier |
| 04/30/1997 | CN1148561A Exhausting device for waste smoke and air of ship |
| 04/28/1997 | CA2161738A1 Speed control system |
| 04/17/1997 | WO1997013682A2 Ship drive with a driving engine and a directly driven propeller shaft |
| 04/10/1997 | DE19623914A1 Schiffsantrieb mit einer Antriebsmaschine und direkt angetriebener Propellerwelle Marine Drive with an engine and directly driven propeller shaft |
| 04/08/1997 | US5618214 Apparatus and method for eradicating zebra mussels in vessel raw water marine plumbing systems |
| 04/08/1997 | US5618211 Apparatus for and a method of controlling the speed of a ship |
| 04/01/1997 | US5616056 Auxiliary propulsion system for seagoing ships |
| 03/26/1997 | EP0706620B1 A dual vibration-compensating apparatus |
| 03/25/1997 | US5613470 Outboard engine assembly |
| 03/19/1997 | EP0610361B1 Ship's hull vibration damper |
| 03/12/1997 | EP0760776A1 A bottom well and sea water piping system for vessels |
| 03/06/1997 | DE19544102A1 Pump-jet mounting in ship |
| 03/04/1997 | US5607333 Cooling water inlet and method of fabricating a cooling water inlet member |
| 03/04/1997 | US5607330 Collapsible boat powered by a land vehicle |
| 03/04/1997 | US5606930 Hand operated trolling motor control station |
| 02/25/1997 | US5605480 Easily maneuverable vessel propelled by eight jets and sails |
| 02/18/1997 | US5603644 Jet propulsion boat |
| 02/13/1997 | WO1997004973A1 Amphibious caravan |
| 02/04/1997 | US5599218 Configuration for a marine engine exhaust system |
| 01/30/1997 | WO1997003282A1 Device and method for calibration of a throttle arrangement |
| 01/23/1997 | DE19526199A1 Water bicycle |
| 01/15/1997 | CN2245035Y Jet flying boat |
| 01/07/1997 | US5591058 For preventing soiling of a boat transom by exhaust gases |
| 01/07/1997 | US5591056 Motorcycle propelled boat |
| 01/02/1997 | EP0750559A1 Submerged marine exhaust system |