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Universal chimney pipe cover
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Patent number 10,690,343
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Issue date Jun 23, 2020
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Top Hat Chimney Systems, Inc.
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Thomas Hazard
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Chimney cap
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Patent number 8,246,430
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Issue date Aug 21, 2012
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Improved Consumer Products, Inc.
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William C. Paynton
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Fume duct joint with clamping collar
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Patent number 5,961,154
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Issue date Oct 5, 1999
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Douglas Williams
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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788200
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Patent number 788,200
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Issue date Apr 25, 1905
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...