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

Patent Owner(s)

Patent Owner	Address
LEDYARD NATIONAL BANK	COMMERCIAL LENDING 38 SOUTH MAIN ST HANOVER NH 03755

International Classification(s)

• H04N:PICTORIAL COMMUNICATION, e.g. TELEVISION
• A61B:DIAGNOSIS; SURGERY; IDENTIFICATION

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Chen, David T	Somerville, MA	45	3125
McKenna, Michael	Cambridge, MA	34	416
Pieper, Steven D	Thetford Center, VT	24	2390

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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

Full Text

US Patent No: 5545120

Endoscopic viewing system for maintaining a surgeon's normal sense of kinesthesia during endoscopic surgery regardless of the orientation of the endoscope vis-a-vis the surgeon

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