Watercraft

United States of America Patent

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Feb 11, 2003
Grant Date
Dec 20, 2001
app pub date
Apr 12, 2001
filing date
Apr 14, 2000

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Abstract

A tugboat with a forwardly-facing rudder and roller at the stern, and a propulsion drive disposed at either the bow or the stem that generates a high transverse force for towing large ships on a desired course. The roller is disposed in an off-flow region aft of the rudder.

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Patent Owner(s)

Patent Owner	Address
VOITH SCHIFFTSTECHNIK GMBH & CO KG	PAUL-HARTMANN-STRASSE 4 D-89522 HEIDENHEIM

International Classification(s)

B63H:MARINE PROPULSION OR STEERING

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Bartels, Jens-Erik	Heidenheim, DE	1	4
Gross, Harald	Bolheim, DE	25	430
Jurgens, Dirk	Heidenheim, DE	7	26

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Watercraft

Number of patents in Portfolio can not be more than 2000

United States of America Patent

09834186

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PATENT NO	6516739
APP PUB NO	20010052313A1
SERIAL NO	09834186
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 11, 2003	US,6516739,B2 US6516739B2	GRANTED PATENT AS SECOND PUBLICATION
December 20, 2001	US,20010052313,A1 US20010052313A1	FIRST PUBLISHED PATENT APPLICATION

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09834186

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