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

Patent Owner(s)

Patent Owner	Address
INGENIUM PRODUCT DEVELOPMENT INC	7741 COMMERCIAL LANE ALLENTON WI 53002

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Groeschel, John A	Theresa, WI	30	327
Gruenwald, David J	Butte des Morts, WI	26	438
Hatch, Edwin B	West Bend, WI	13	251
Lenzendorf, Jeremy M	West Bend, WI	3	91
Schmitz, David A	Reeseville, WI	8	201

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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: D526505

Spa apparatus

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