Patents by Inventor Ronnie D. Pfeil

Ronnie D. Pfeil 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).

  • Stake puller for concrete forms
    Patent number: D371492
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: July 9, 1996
    Inventors: Ronnie D. Pfeil, Lester J. Martin