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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
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Joseph F. Jackson
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Solid bowl decanter centrifuges
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Patent number 4,298,160
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Issue date Nov 3, 1981
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Thomas Broadbent & Sons Limited
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Joseph F. Jackson
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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-
-
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Scroll discharge decanter centrifuges
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Patent number 4,167,243
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Issue date Sep 11, 1979
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Thomas Broadbent & Sons Limited
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Joseph F. Jackson
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B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
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Desludger type disc bowl centrifuges
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Patent number 4,159,798
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Issue date Jul 3, 1979
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Geoffrey L. Grimwood
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B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...