Patents by Inventor Leonard C Harker

Leonard C Harker 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).

  • Patent number: D433229
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: November 7, 2000
    Inventors: Leonard C Harker, Joanne Harker