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

Patent Owner(s)

• Owner owned or assignment not recorded

International Classification(s)

• C02F:TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE....
• E03F:SEWERS; CESSPOOLS

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• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Donahue, Richard	Edgartown, US	2	1
Goodale, Peter	Vineyard Haven, US	1	0
Horger, Robert	New Kensington, US	2	0
Keffer, Ron	Harrison City, US	2	0
Middleton, Andrew C	Mount Sidney, US	6	26
Smith, John R	Pittsburgh, US	181	3806
Weightman, Robin L	Murrysville, US	6	26

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Jul 23, 2023
7.5 Year Payment	$3600.00	$1800.00	$900.00	Jul 23, 2027
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jul 23, 2031

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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 Application No: 2020/0024,171

Multiple Chamber Septic Tank with a Plurality of Large and Small Access Ports

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