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Drilling screw
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Patent number 9,181,970
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Issue date Nov 10, 2015
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SWG Schraubenwerk Gaisbach GmbH
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Guenter Stiebitz
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Rotary drive design
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Patent number 8,955,417
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Issue date Feb 17, 2015
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SWG Schraubenwerk Gaisbach GmbH
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Guenter Stiebitz
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Screw
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Patent number 8,408,855
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Issue date Apr 2, 2013
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SWG Schraubenwerk Gaisbach GmbH
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Günter Stiebitz
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Screw
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Patent number 7,862,279
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Issue date Jan 4, 2011
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SWG Schraubenwerk Gaisbach GmbH
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Günter Stiebitz
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...