Patents by Inventor David H. Frost

David H. Frost 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).

  • Set of square domino tiles
    Patent number: D789456
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: June 13, 2017
    Inventors: Wenlan H. Frost, Daniel A. Frost, Sr., Daniel A. Frost, Jr., David H. Frost