Granted Patent
Utility
US 5,883,949 · App. 08/750,879
Method for a private branch communications exchange to activate a night service configuration
Inventor:
Hartmut Granderath
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Dec 17, 1996
Inventor
Hartmut Granderath
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.