Patents by Inventor Raija Harrila

Raija Harrila 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).

  • Information system for a PABX
    Patent number: 5572577
    Abstract: The invention relates to an information system for a PABX (1) having extensions (B1-B5), a switchboard (2) for manual switching operations, and a direct inward dialling (DDI) function for switching calls provided with a DDI code directly to the PABX extensions. In the invention, the majority of incoming calls to the PABX are controlled by the information system of the invention, which comprises a database (21) maintaining status information on PABX subscribers, and a central processing unit CPU (20) connected to the database and to a voice message unit (22) controlled by the CPU on the basis of status information retrieved from the database, to deliver the desired voice messages to the calling party.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: November 5, 1996
    Assignee: ICL Data OY
    Inventor: Raija Harrila