Patents by Inventor William Halstead

William Halstead 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).

  • Mini light bulb tool
    Patent number: 5434510
    Abstract: There is disclosed a dual component circuit testing and utility tool for testing defective circuits and bulbs in miniature Christmas light sets. The testing and utility tool includes a nonconductive rod having a double pronged conductive component at one end and a conductive paw component at the other end.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: July 18, 1995
    Inventor: William Halstead