Patents by Inventor Darrell F. Hill

Darrell F. Hill 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).

  • Weighted aerial toy
    Patent number: D274176
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: June 5, 1984
    Inventor: Darrell F. Hill