Patents by Inventor William L. Tomim

William L. Tomim 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).

  • On-line telephone troubleshooting apparatus
    Patent number: 4438299
    Abstract: Telephone station isolating apparatus includes solid state components connected together in a termination circuit and a pair of cooperating control circuits. Each of the control circuits comprises a blocking diode and a reversely blocking silicon unilateral switch.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: March 20, 1984
    Inventor: William L. Tomim