Granted Patent
Utility
US 6,430,283 · App. 09/269,622
Communication system consisting of at least two private branch exchanges with pbx team function
Inventor:
Klaus Wille
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Mar 30, 1999
Inventor
Klaus Wille
Assignee (at issue)
Siemens Aktiengesellschaft
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.