Patents by Inventor Richard K. Colgrove, Sr.

Richard K. Colgrove, Sr. 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).

  • Disposable fireplace liner
    Patent number: D649360
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: November 29, 2011
    Inventors: Libby A. Calvin, Richard K. Colgrove, Sr.