Patents by Inventor Robert H. Porter

Robert H. Porter 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).

  • Tool holder
    Patent number: D283100
    Type: Grant
    Filed: October 18, 1982
    Date of Patent: March 25, 1986
    Inventor: Robert H. Porter