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Overhead drilling apparatus
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Patent number 10,730,174
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Issue date Aug 4, 2020
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ACCELERATED FASTENING, LLC
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J. Reed Felton
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Jackhammer with a lift assist
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Patent number 7,694,749
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Issue date Apr 13, 2010
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Integrated Tool Solutions LLC
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Ronald Jon Sorric
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Jackhammer lift assist
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Patent number 7,607,491
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Issue date Oct 27, 2009
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Integrated Tool Solutions LLC
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Ronald Jon Sorric
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Tool extractor
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Patent number 4,548,279
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Issue date Oct 22, 1985
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Wenzel Zaruba
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2207659
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Patent number 2,207,659
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Issue date Jul 9, 1940
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1430292
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Patent number 1,430,292
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Issue date Sep 26, 1922
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...