Granted Patent
Utility
US 5,479,650 · App. 07/996,434
Method and apparatus for switching communications from a secondary channel to a primary channel
Inventors:
James L. Archibald, Mahendra Patel
Patented Case
View Patent ↗
Granted: Dec 26, 1995
Filed: Dec 24, 1992
Inventors
James L. Archibald
Mahendra Patel
Assignee (at issue)
AT&T CORP.
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.