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Ignition plug
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Patent number 10,720,759
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Issue date Jul 21, 2020
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NGK Spark Plug Co., Ltd.
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Susumu Imai
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H01 - BASIC ELECTRIC ELEMENTS
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Spark plug
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Patent number 9,478,946
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Issue date Oct 25, 2016
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Nano Spark Inc.
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Mark Farrell
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H01 - BASIC ELECTRIC ELEMENTS
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Valve controlled combustion system
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Patent number 9,410,525
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Issue date Aug 9, 2016
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DENSO International America, Inc.
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Patrick Powell
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Spark plug
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Patent number 9,300,116
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Issue date Mar 29, 2016
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Nano Spark Inc.
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Mark Farrell
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H01 - BASIC ELECTRIC ELEMENTS
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Spark plug construction
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Patent number 9,112,334
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Issue date Aug 18, 2015
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Nano Spark Inc.
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Mark Farrell
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H01 - BASIC ELECTRIC ELEMENTS
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Spark electrodes with adjustable gap
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Patent number 6,712,033
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Issue date Mar 30, 2004
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SAAB Automobile AB
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Karl Marforio
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Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
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Variable gap spark plug
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Patent number 6,586,865
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Issue date Jul 1, 2003
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Delphi Technologies, Inc.
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Goro Tamai
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H01 - BASIC ELECTRIC ELEMENTS
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3431450
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Patent number 3,431,450
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Issue date Mar 4, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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2774904
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Patent number 2,774,904
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Issue date Dec 18, 1956
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H01 - BASIC ELECTRIC ELEMENTS
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2150727
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Patent number 2,150,727
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Issue date Mar 14, 1939
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H01 - BASIC ELECTRIC ELEMENTS
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1929202
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Patent number 1,929,202
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Issue date Oct 3, 1933
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H01 - BASIC ELECTRIC ELEMENTS
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1929203
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Patent number 1,929,203
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Issue date Oct 3, 1933
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H01 - BASIC ELECTRIC ELEMENTS
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1799922
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Patent number 1,799,922
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Issue date Apr 7, 1931
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H01 - BASIC ELECTRIC ELEMENTS
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1442423
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Patent number 1,442,423
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Issue date Jan 16, 1923
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H01 - BASIC ELECTRIC ELEMENTS
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1401585
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Patent number 1,401,585
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Issue date Dec 27, 1921
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H01 - BASIC ELECTRIC ELEMENTS
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1400525
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Patent number 1,400,525
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Issue date Dec 20, 1921
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H01 - BASIC ELECTRIC ELEMENTS