Patents by Inventor Robert Holpuch

Robert Holpuch 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).

  • Electrical plug
    Patent number: D425025
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: May 16, 2000
    Inventors: Wayne Kowalski, Robert Holpuch