Patents by Inventor Louis K. Warden

Louis K. Warden 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: D256277
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: August 5, 1980
    Assignee: Pacific Clay Products
    Inventor: Louis K. Warden