Patents by Inventor Gordon Withall

Gordon Withall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dual port medical oxygen humidifier
    Patent number: 6189870
    Abstract: An improved disposable bubble oxygen humidifier is provided having a humidifying chamber included for the blending of oxygen and moisture. A slide switch on the top of the humidifier directs pure oxygen to the patient, or alternately, routes the oxygen through the humidifier and on to the patient. Hoses are attached at an inlet supply port and an outlet discharge port.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: February 20, 2001
    Inventor: Gordon Withall