Patents by Inventor Richard V. Duncan

Richard V. Duncan 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).

  • Patent number: 5101589
    Abstract: A firearm is provided with a handle frame and a receiver frame, wherein the invention includes illuminated indicators in varying configurations to include a descending order of lined length along a rear wall of the handle frame and on each side wall of spaced side walls of the handle frame. A modified form of the invention further includes luminescent indicators aligned with rear and forward sight members of the firearm mounted on the top wall of the receiver frame.
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: April 7, 1992
    Inventor: Richard V. Duncan