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Fast chip removal reaming screw
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Patent number 11,713,779
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Issue date Aug 1, 2023
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BI-MIRTH CORP.
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Yi-Chieh Shih
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Low-wear screw structure
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Patent number 11,598,363
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Issue date Mar 7, 2023
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BI-MIRTH CORP.
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Yi-Chieh Shih
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Self-drilling screw structure
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Patent number 11,371,546
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Issue date Jun 28, 2022
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BI-MIRTH CORP.
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Yi-Chieh Shih
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Wood screw structure
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Patent number 11,371,547
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Issue date Jun 28, 2022
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BI-MIRTH CORP.
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Yi-Chieh Shih
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Self-tapping screw head structure
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Patent number 10,480,562
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Issue date Nov 19, 2019
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BI-MIRTH CORP.
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Yi-Chieh Shih
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Flooring screw
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Patent number 9,970,470
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Issue date May 15, 2018
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BI-MIRTH CORP.
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Yi-Chieh Shih
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Hole expanding screw
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Patent number 9,850,935
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Issue date Dec 26, 2017
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BI-MIRTH CORP.
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Yi-Chieh Shih
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Optical thin sheet
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Patent number 7,972,689
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Issue date Jul 5, 2011
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Eternal Chemical Co., Ltd.
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Lung-Lin Hsu
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G02 - OPTICS