Patents by Inventor Donald F. Dautel

Donald F. Dautel 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).

  • Cellular data telephone system and cellular data telephone therefor
    Patent number: 4837800
    Abstract: A unique cellular data telephone system includes a cellular telephone system (CTS 150), a cellular data switch (CDS 170), and a telephone central office (130) for providing both voice and data telephone servies to portable and mobile cellular data telephone (CDTs 102, 122) located anywhere in a large geographical area. Each of the CDTs (102, 122) includes a data control unit (DCU 106), a cellular modem (162) and a cellular telephone (108) and associated antenna (110), and connects to a data terminal (104, 124) with keyboard and display.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: June 6, 1989
    Assignee: Motorola, Inc.
    Inventors: Thomas A. Freeburg, Donald F. Dautel