Patents by Inventor Byron C. Rasmussen

Byron C. Rasmussen 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).

  • Screen and method of eye examination using same
    Patent number: 4437737
    Abstract: A method for examining the eyes of a patient. A screen for having light and indicia projected thereon from a light and indicia source in the examination of the eyes of a patient having a refraction apparatus over the eyes as in the nature of eyeglasses on the patient. The screen includes a frame, and a screen mounted on the frame. The combined frame-screen is parabolic. A mount attaches to the frame and is capable of permitting positioning the combined frame-screen about both a vertical and a horizontal axis to direct light therefrom.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: March 20, 1984
    Inventor: Byron C. Rasmussen