Patents by Inventor John W. Petras

John W. Petras 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: D294579
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: March 8, 1988
    Assignee: AT&T Teletype Corporation
    Inventors: Kenneth R. Kirpluk, Joseph G. Murglin, John W. Petras