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Syringe valve and clamping mechanism
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Patent number 4,470,431
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Issue date Sep 11, 1984
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American Hospital Supply Corporation
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Carl L. Shackelford
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Sample injection valve
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Patent number 4,243,071
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Issue date Jan 6, 1981
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Altex Scientific, Inc.
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Carl L. Shackelford
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G01 - MEASURING TESTING
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Cannula injection device
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Patent number 4,205,767
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Issue date Jun 3, 1980
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Altex Scientific, Inc.
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Carl L. Shackelford
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL