Patents by Inventor Alex Kershaw

Alex Kershaw 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).

  • Security device for electric appliances
    Patent number: 4865557
    Abstract: A closure device clamps over the plug to an appliance for securing the appliance from unauthorized use. The closure device has a base and an opposed hinged cover which closes over the base to enclosed the plug. Twin posts extend upward from the base for engaging twin apertures in the cover when the device is closed. Caps on the posts lock the device closed, and must be severed to remove the posts from the apertures.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: September 12, 1989
    Inventor: Alex Kershaw