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Grip meter
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Patent number D342688
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Issue date Dec 28, 1993
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Pratt Burnerd International, Ltd.
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Joseph F. Jackson
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D10 - Measuring, testing, or signalling instruments
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Chucks
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Patent number 4,700,955
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Issue date Oct 20, 1987
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Pratt Burnerd International Limited
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Joseph F. Jackson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Jaw changing apparatus
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Patent number 4,617,721
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Issue date Oct 21, 1986
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Pratt Burnerd International Limited
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Joseph F. Jackson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Work holding devices
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Patent number 4,616,838
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Issue date Oct 14, 1986
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Pratt Burnerd International Limited
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Joseph F. Jackson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Chucks
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Patent number 4,506,896
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Issue date Mar 26, 1985
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Pratt Burnerd International Limited
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Joseph F. Jackson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Workholding devices
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Patent number 4,502,704
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Issue date Mar 5, 1985
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Pratt Burnerd International Limited
-
Joseph F. Jackson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Workholding
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Patent number 4,254,676
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Issue date Mar 10, 1981
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Pratt Burnerd International Limited
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Bernard Wilson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Machine tool chucks
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Patent number 3,954,275
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Issue date May 4, 1976
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Pratt Burnerd International Limited
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Kenneth Bailey Philip Pickles
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR