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Cannula with balloon tip
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Patent number 6,287,319
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Issue date Sep 11, 2001
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Amed Systems, Inc.
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Walid N. Aboul-Hosn
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Medical suction apparatus
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Patent number 5,437,651
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Issue date Aug 1, 1995
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Research Medical, Inc.
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Robert J. Todd
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Fluid metering device
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Patent number 4,291,693
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Issue date Sep 29, 1981
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Sorenson Research Company, Inc.
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Robert J. Todd
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE