Patents by Inventor Robert Donarummo

Robert Donarummo 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).

  • Extension cord lock
    Patent number: 4183603
    Abstract: A simple clip for firmly holding together an electric plug and socket on separate extension cords, and prevent accidental disengagement thereof, particularly when the cords are being pulled or moved; the clip being generally U-shaped and made of rubber or plastic with holes through each end for the cords to pass therethrough, while the connecting plug and socket are located between the U-shaped ends.
    Type: Grant
    Filed: June 9, 1978
    Date of Patent: January 15, 1980
    Inventor: Robert Donarummo