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Water seal drum
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Patent number 4,655,242
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Issue date Apr 7, 1987
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JGC Corporation
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Takeru Hamazaki
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Ground flare stack
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Patent number 4,652,233
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Issue date Mar 24, 1987
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JGC Corporation
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Takeru Hamazaki
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Ground flare stack
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Patent number 4,140,471
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Issue date Feb 20, 1979
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National Airoil Burner Company, Inc.
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John F. Straitz
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES