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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
AERODYN ENGINEERING GMBH	24768 RENDSBURG

International Classification(s)

• F03D:WIND MOTORS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Siegfriedsen, Soenke	Rendsburg, DE	5	31

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Oct 22, 2025

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
April 22, 2014	US,8704391,B2   US8704391B2	GRANTED PATENT AS SECOND PUBLICATION
October 13, 2011	US,20110248501,A1   US20110248501A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8704391

Method of parking double-bladed rotor of wind power plant

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