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Manfred Heer
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Spay am Rhein, DE
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Patent Grant
Boat propulsion unit with a propulsion propeller arranged under the...
Patent number
5,397,255
Issue date
Mar 14, 1995
Schottel-Werft Josef Becker GmbH & Co., KG
Manfred Heer
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT