Patents by Inventor Coyt C. Shirley

Coyt C. Shirley 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).

  • Apparatus for constructing masonry corners
    Patent number: 5136785
    Abstract: A device adapted to be mounted on a wall for vertically and horizontally aligning masonry corners. The device comprises a pair of members connected at a joint, the members defining an interior angle of approximately 90 degrees and a corresponding exterior angle of approximately 270 degress. An adjustable, elongated rod is mounted at the joint to bisect, in the alternative either the interior or exterior angle. A plumb line is secured to the elongated rod a selected distance from the joint.
    Type: Grant
    Filed: December 12, 1991
    Date of Patent: August 11, 1992
    Inventor: Coyt C. Shirley