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Fastener
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Patent number 4,836,730
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Issue date Jun 6, 1989
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Emhart Industries, Inc.
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George Jesson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Drill screw
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Patent number 4,787,792
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Issue date Nov 29, 1988
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USM Corporation
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George Jesson
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Groove point screw
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Patent number 4,725,175
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Issue date Feb 16, 1988
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USM Corporation
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George Jesson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR