Patents by Inventor Stanley Earl Hackler

Stanley Earl Hackler 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).

  • Writing instrument
    Patent number: D398025
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: September 8, 1998
    Inventor: Stanley Earl Hackler