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Issue date Aug 20, 1991
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Fanuc Ltd.
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G05 - CONTROLLING REGULATING
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Pen turret control system
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Issue date Dec 5, 1989
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CalComp Inc.
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Charles Gunderson
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Pen turret control system
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Patent number 4,677,572
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Issue date Jun 30, 1987
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Sanders Associates, Inc.
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Charles Gunderson
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Automatic tool change apparatus
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Patent number 4,107,589
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Issue date Aug 15, 1978
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Toyoda Koki Kabushiki-Kaisha
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Kunihiko Eto
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Patent number 3,753,237
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Issue date Aug 14, 1973
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G05 - CONTROLLING REGULATING
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3716128
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Issue date Feb 13, 1973
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G05 - CONTROLLING REGULATING
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2823344
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Patent number 2,823,344
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Issue date Feb 11, 1958
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2823345
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Patent number 2,823,345
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Issue date Feb 11, 1958
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR