Granted Patent
Utility
US 6,556,816 · App. 09/494,267
Method and apparatus for re-establishing a call in a communication system
Inventors:
John Matthew Gafrick, Jeffrey Arthur Zahnle
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Jan 31, 2000
Inventors
John Matthew Gafrick
Jeffrey Arthur Zahnle
Assignee (at issue)
LUCENT TECHNOLOGIES INC.
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.