Patents by Inventor Phillip H. Hendrickson

Phillip H. Hendrickson 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).

  • Fluorescent ophthalmoscopic photographing apparatus
    Patent number: 4200376
    Abstract: Fluorescent ophthalmoscopic photographing apparatus including an injector for a fluorescent agent and a photographing camera for taking a photograph of an eye fundus. A time counter is provided for indicating a count of time interval from the start of the injection to each instance when the photograph is taken. A switch is provided so as to be actuated when the injection is completed to thereby make a record of the time interval wherein the injection is performed.
    Type: Grant
    Filed: July 25, 1978
    Date of Patent: April 29, 1980
    Assignee: Tokyo Kogaku Kikai Kabushiki Kaisha
    Inventors: Masaya Takeuchi, Phillip H. Hendrickson