Patents by Inventor Marie Addoo

Marie Addoo 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).

  • Telephone dial lock
    Patent number: 4057697
    Abstract: A telephone dial lock assembly including a shield plate, shackle and lock covers and immobilizes the dial of a trimline telephone instrument to render the telephone dialing mechanism inoperable for making outgoing calls. No interference is presented to the use of the telephone instrument for the receipt of incoming calls.
    Type: Grant
    Filed: January 7, 1976
    Date of Patent: November 8, 1977
    Inventor: Marie Addoo