Patents by Inventor Arthur Kessler

Arthur Kessler 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).

  • Two terminal circuitry for voltage limitation
    Patent number: 4323792
    Abstract: A two terminal solid state device for voltage limitation comprises a controllable current path and a control electrode for the control thereof. A series arrangement of one or more diodes is connected with one of the ends thereof to said control electrode and with the other end thereof to one of said two terminals of the device. The latter is adapted to operate above the combined threshold voltages of said controllable current path and that of said one or more diodes.
    Type: Grant
    Filed: December 5, 1978
    Date of Patent: April 6, 1982
    Inventors: Gunther Bergmann, Arthur Kessler
  • Signal interpreting system for frequency selective multifrequency tone dialing
    Patent number: 3963878
    Abstract: A signal interpreting system for frequency-selective multi-frequency tone dialing includes a code tester and a code converter, and two serially connected delay means processing the output of said code tester and having an output controlling logic circuitry arranged in the output circuits of said code converter.
    Type: Grant
    Filed: June 26, 1974
    Date of Patent: June 15, 1976
    Assignee: Telefonbau und Normalzeid G.m.b.H.
    Inventor: Arthur Kessler