Patents by Inventor Frank H. Bergendorf

Frank H. Bergendorf 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).

  • Gardening tool having diverging prongs and straight prongs
    Patent number: 5360071
    Abstract: A gardening tool for digging around weeds, vegetables, bushes, etc., and in particular, a gardening tool having a handle, two laterally mounted straight prongs extending parallel to one another, and a medially mounted pair of diverging prongs which extend in a gradually diverging manner from one another to define a V-shaped member.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: November 1, 1994
    Inventor: Frank H. Bergendorf