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Wood screw
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Patent number 12,055,174
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Issue date Aug 6, 2024
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Kwantex Research Inc.
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Chao-Wei Lin
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Crack-proof screw
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Patent number 10,337,548
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Issue date Jul 2, 2019
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Kwantex Research Inc.
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Chao-Wei Lin
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Screw
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Patent number 10,309,437
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Issue date Jun 4, 2019
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Kwantex Research Inc.
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Chao-Wei Lin
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Oblique fastening apparatus
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Patent number 10,307,898
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Issue date Jun 4, 2019
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Kwantex Research Inc.
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Chao-Wei Lin
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Screw for avoiding cracks and burrs
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Patent number 10,054,148
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Issue date Aug 21, 2018
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Kwantex Research Inc.
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Chao-Wei Lin
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Threads of a screw
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Patent number D708509
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Issue date Jul 8, 2014
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Kwantex Research Inc.
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Chao Wei Lin
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D08 - Tools and hardware
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Threads of a screw
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Patent number D708510
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Issue date Jul 8, 2014
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Kwantex Research Inc.
-
Chao Wei Lin
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D08 - Tools and hardware
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Screw
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Patent number D684038
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Issue date Jun 11, 2013
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Kwantex Research Inc.
-
Chao-Wei Lin
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D08 - Tools and hardware
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Threads of a screw
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Patent number D676312
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Issue date Feb 19, 2013
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Kwantex Research Inc.
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Chao Wei Lin
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D08 - Tools and hardware