Granted Patent
Utility
US 6,445,921 · App. 09/467,591
Call re-establishment for a dual mode telephone
Inventor:
John Bell
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Dec 20, 1999
Inventor
John Bell
Assignee (at issue)
KONINKLIJKE PHILIPS ELECTRONICS NV
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.