Patents by Inventor John D. Royal

John D. Royal 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: 5383293
    Abstract: A picture frame arrangement for installation in picture frames. The arrangement includes a planar mat board having a first picture viewing opening, a thin transparent film secured to the back surface of the mat board and covering the mat board picture viewing opening, and at least one planar spacer board having a second picture viewing opening. The spacer board is installed against the front surface of the picture or printed material to be viewed and the mat board with the transparent film on the back surface thereof is installed against the front surface of the spacer board such that the transparent film is disposed in parallel spaced relation to the picture or printed material to be viewed through the first and second picture viewing openings.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: January 24, 1995
    Inventor: John D. Royal