Patents by Inventor Friedrich-Konrad Frenkler

Friedrich-Konrad Frenkler 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).

  • Computer disk cartridge
    Patent number: D312077
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: November 13, 1990
    Assignee: NeXT, Inc.
    Inventors: Curtis Sasaki, Steven P. Jobs, Hartmut Esslinger, Friedrich-Konrad Frenkler
  • Computer disk cartridge
    Patent number: D312250
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: November 20, 1990
    Assignee: Next, Inc.
    Inventors: Curtis Sasaki, Steven P. Jobs, Hartmut Esslinger, Friedrich-Konrad Frenkler