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

Patent Owner(s)

Patent Owner	Address
MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH	200 FIRST STREET S W ROCHESTER MN 55905

International Classification(s)

• B25B:TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR,....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
An, Kai-Nan	685 Itasca Ct., Rochester, MN 55901	18	272
Currier, Bradford L	2005 Nerrihills Dr. SW., Rochester, MN 55902	14	383
Neale, Patricia	520 Zumbro Dr. NW., Rochester, MN 55901	1	98
Schultz, Fredrick	2446 Northern Hill Ct. NE., Rochester, MN 55906	2	109
Zhao, Chunfeng	2130 9th Ave. NE., Rochester, MN 55906	13	278

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
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
December 30, 2003	US,6668688,B2   US6668688B2	GRANTED PATENT AS SECOND PUBLICATION
January 02, 2003	US,20030000350,A1   US20030000350A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 6668688

Expandable screw apparatus and method thereof

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