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

Patent Owner(s)

• RITCHEY MANUFACTURING, INC.

International Classification(s)

• 3008:MARKERS, MARKS AND SHACKLES

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ritchey, Craig E	Brighton, US	15	225
Ritchey, Eugene B	Brighton, US	23	496
Ritchey, Grant A	Hudson, US	8	35

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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: D672922

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