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

Patent Owner(s)

Patent Owner	Address
QINGDAO D&D ELECTRO MECHANCIAL TECHNOLOGIES CO LTD	151 ZHUZHOU ROAD LOASHAN DISTRICT QIHNGDAO SHANDONG PROVINCE P R 266101

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Guo, Jianjin	Qingdao, CN	3	16
Wang, Daguang	Qindago, CN	18	142

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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: D523717

Sharpener

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