Patents by Inventor Diana L. Mitchell

Diana L. Mitchell 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).

  • Trowel blind
    Patent number: 5261144
    Abstract: A trowel tool is arranged to include a U-shaped blade holder receiving an elongate blade having a concave top face and a convex bottom face. The trowel tool includes a telescoping handle arrangement mounted medially and orthogonally relative to the blade holder structure.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: November 16, 1993
    Inventors: Larry A. Mitchell, Diana L. Mitchell
  • Concrete reinforcing rod spacer
    Patent number: D279164
    Type: Grant
    Filed: May 9, 1984
    Date of Patent: June 11, 1985
    Inventors: Diana L. Mitchell, Howard Hewitt
  • Concrete reinforcing rod spacer
    Patent number: D279352
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: June 25, 1985
    Inventors: Diana L. Mitchell, Howard Hewitt