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

Patent Owner(s)

Patent Owner	Address
BANK OF AMERICA N A AS ADMINISTRATIVE AGENT	100 FEDERAL STREET BOSTON MA 02110

International Classification(s)

• 2102:GYMNASTICS AND SPORTS APPARATUS AND EQUIPMENT

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Halfen, Joseph A	1724 Brighton Trail, Woodbury, MN 55125	10	397
Haugen, Peter H	9504 Garrison Way, Eden Prairie, MN 55347	4	197
Hilk, Lyle R	1998 Scarborough Ct., Chaska, MN 55318	7	366
Johnston, Michael R	5417 Vernon Ct., Savage, MN 55378	52	949
Ouyang, Tianhong	7957 Victoria Dr., Victoria, MN 55386	13	477
Porth, Timothy J	13055 Dahlia Cir. #205, Eden Prairie, MN 55344	19	994
Wetterlin, Alan	1131 Ridge Bluff Dr., Chaska, MN 55318	2	145

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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: D425940

Aerobic ski exerciser

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