Patents Assigned to Private Line Communications
  • Patent number: 5367557
    Abstract: A mobile radio system is provided which can transmit and receive telephone calls and which can accurately determine the date of, the length of, and the DTMF numbers dialed during a telephone call utilizing the mobile radio system.
    Type: Grant
    Filed: March 23, 1993
    Date of Patent: November 22, 1994
    Assignee: Private Line Communications
    Inventor: Richard L. Ozenbaugh, II