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

Patent Owner(s)

• EMPI, INC.

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• Non-US Classification not provided for expired patents

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ioffe, Zosim	St. Paul, MN	9	172
Maurer, Donald D	Anoka, MN	26	1522
Ober, Stephen H	Salt Lake City, UT	4	91

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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: D297168

Transcutaneous electrical nerve stimulator

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