Granted Patent
Utility
US 6,798,770 · App. 09/082,915
Method for handling telephone calls via at least one telephone network using the internet
Inventors:
Frank Hollatz, Christian Marc Schmidt, Joachim Ungruh, Alfred Jugel, Umesh Bhavsar, Andreas Lindenthal, Thomas Lange
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: May 21, 1998
Inventors
Frank Hollatz
Christian Marc Schmidt
Joachim Ungruh
Alfred Jugel
Umesh Bhavsar
Andreas Lindenthal
Thomas Lange
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.