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Nasal oxygen mask
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Patent number 5,233,978
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Issue date Aug 10, 1993
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Medway
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James J. Callaway
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Ultrasonic oxygen humidifier
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Patent number 4,993,411
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Issue date Feb 19, 1991
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Medway
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James J. Callaway
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Cord holding device
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Patent number 4,770,377
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Issue date Sep 13, 1988
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James J. Callaway
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Cord holding device
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Patent number 4,702,443
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Issue date Oct 27, 1987
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James J. Callaway
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...