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Pneumatic demand oxygen valve
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Patent number 5,360,000
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Issue date Nov 1, 1994
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Puritan-Bennett Corporation
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William Carter
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Flow selector device
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Patent number 5,016,673
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Issue date May 21, 1991
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Puritan-Bennett Corporation
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William Carter
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Dual lumen cannula
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Patent number 4,989,599
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Issue date Feb 5, 1991
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Puritan-Bennett Corporation
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William Carter
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Respiratory aid device
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Patent number 4,870,963
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Issue date Oct 3, 1989
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Bussell; Carol
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William Carter
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Flow selector device
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Patent number 4,724,869
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Issue date Feb 16, 1988
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Bussell; Ray V.
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William Carter
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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