Patents by Inventor Keith W. Holzberger

Keith W. Holzberger 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).

  • Green fork
    Patent number: D328630
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: August 11, 1992
    Inventor: Keith W. Holzberger