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Suction control apparatus
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Patent number 4,289,158
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Issue date Sep 15, 1981
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C. R. Bard, Inc.
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John R. Nehring
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Stopcock
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Patent number 4,003,403
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Issue date Jan 18, 1977
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International Paper Company
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John R. Nehring
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Self-contained fluid evacuator
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Patent number 3,983,872
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Issue date Oct 5, 1976
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International Paper Company
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John R. Nehring
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE