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

Patent Owner(s)

Patent Owner	Address
CAMBRIDGE ENGINEERING INC	17825 CHESTERFIELD AIRPORT ROAD CHESTERFIELD MISSOURI 63005

International Classification(s)

• F24H:FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING H....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Braun, Marc D	St. Louis County, US	1	5
Cleary, Thomas J	St. Louis County, US	5	257
Foley,, Jr John P	St. Louis County, US	1	5
Kramer,, Jr John H	St. Louis County, US	1	5
Potter,, Sr Gary J	St. Charles County, US	1	5
Schoenberg, Carl	St. Louis County, US	1	5

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	May 17, 2027

Fee	Large entity fee	small entity fee	micro entity fee
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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
November 17, 2015	US,9188362,B2   US9188362B2	GRANTED PATENT AS SECOND PUBLICATION
July 31, 2014	US,20140209086,A1   US20140209086A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9188362

Direct fired heaters including premix burner technology

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