Patents by Inventor Robert A. Birch

Robert A. Birch 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).

  • Shoulder stand device
    Patent number: 4367870
    Abstract: A health and exercise device comprising a rockable structure with vertical and horizontal body supporting portions connected by an arcuate portion, the user sitting on the horizontal portion and rocking backward into a shoulder stand position when exercising.
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: January 11, 1983
    Inventor: Robert A. Birch
  • Plate
    Patent number: D272117
    Type: Grant
    Filed: March 3, 1981
    Date of Patent: January 10, 1984
    Inventors: Margaret L. Lyon, Robert A. Birch