Patents by Inventor Charles O. Warrell

Charles O. Warrell 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).

  • Camera jig for underwater stereoscopic photography
    Patent number: 4191461
    Abstract: A portable camera jig for use by divers in making close-up, stereoscopic tographs of underwater surfaces with a single lens camera includes, in combination with a sheet metal frame, a clear water box for operation in turbid water and that will permit illumination and operator viewing of the surface to be photographed, a camera support and parallogram linkage for moving the camera laterally between successive exposures, a light source mounted on a mast, and handles by which an individual diver can position the jig and shift the camera.
    Type: Grant
    Filed: May 16, 1979
    Date of Patent: March 4, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John Mittleman, Charles O. Warrell, Ronald S. Peterson