Patents by Inventor Thomas A. Robbins

Thomas A. Robbins 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: 4670991
    Abstract: A drawing machine having a frame for translatory movement upon a drawing surface. The frame defines an elongated, transverse interior opening. A plurality of template means are removably receivable within the interior opening. Each includes an aperture defining a shape which may be traced upon the drawing surface by the user. The template means may be repositioned along the transverse length of the elongated interior opening. Translatory movement of the drawing machine upon the drawing surface and guided movement of the template means along the interior opening permit the user to create varied patterns and pictures.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: June 9, 1987
    Assignee: Robert S. McKay
    Inventors: Robert S. McKay, Thomas A. Robbins, William D. Nelson
  • Patent number: D298158
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: October 18, 1988
    Assignee: Robert S. McKay
    Inventors: Robert S. McKay, Thomas A. Robbins