Patents by Inventor James R. Hahn, III

James R. Hahn, III 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).

  • Key telephone management system
    Patent number: 4905274
    Abstract: A key telephone management controller system enabling telephone customers to control and implement changes to customer key telephone systems served by a telephone switching system. Apparatus and a method interactive with telephone customers records customer-selected key telephone button and line features and controls the telephone switching system to assign the customer-selected button and line features to telephone sets of the customer key telephone system.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: February 27, 1990
    Assignees: American Telephone & Telegraph Company AT&T Bell Laboratories, American Telephone and Telegraph Company
    Inventors: Bret A. Cooper, James R. Hahn, III, William H. Havanas, Mark A. Martinka