Patents by Inventor Richard P. Eitel

Richard P. Eitel 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).

  • Optical instrument and viewing method
    Patent number: 4059347
    Abstract: A see-through zone is provided of a shape and size so that the horizontal end portions of the zone will merge as an image defining a target frame into which the user can center a stationary or moving target by keeping his line of sight properly on the target.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: November 22, 1977
    Inventor: Richard P. Eitel