Patents by Inventor Theodor Pfeiffer

Theodor Pfeiffer 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).

  • Patent number: 4672656
    Abstract: A method for establishing a radio connection between a stationary subscriber terminal connected to a telephone system and a selected mobile subscriber terminal equipped with a transmit/receive device. A search request filed by the stationary subscriber terminal is transmitted to a satellite which broadcasts this search request over a given area of the earth. This search request contains the number of the selected mobile subscriber terminal and the number of the stationary subscriber terminal to be called back or the identification number of a radio transfer exchange with which the stationary subscriber terminal is connected and the circuit number of the connection existing between the radio transfer exchange and the stationary subscriber terminal.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: June 9, 1987
    Assignee: ANT Nachrichtentechnik GmbH
    Inventors: Theodor Pfeiffer, Josef Sperlich