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Heat exchanger fin with ribbed hem
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Patent number 8,408,283
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Issue date Apr 2, 2013
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Centrum Equities Acquisition, LLC
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John A. Kolb
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Engine cooling radiator
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Patent number 7,694,724
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Issue date Apr 13, 2010
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Centrum Equities Acquisition, LLC
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John A Kolb
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F28 - HEAT EXCHANGE IN GENERAL
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Fitting aligner
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Patent number 7,647,683
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Issue date Jan 19, 2010
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Centrum Equities Acquisition LLC
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Arnold Marcus
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...