Granted Patent
Utility
US 6,345,091 · App. 09/641,381
Telecommunication system and method for implementing an ISDN PBX interface
Inventors:
Antonius Vernooij, Pekka Lampola
Patented Case
View Patent ↗
Granted: Feb 5, 2002
Filed: Aug 17, 2000
Inventors
Antonius Vernooij
Pekka Lampola
Assignee (at issue)
Nokia Networks Oy
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.