Granted Patent
Utility
US 5,537,441 · App. 08/067,519
Controlled simultaneous analog and digital communication
Inventors:
Gordon Bremer, Joseph Q. Chapman, P. Michael Henderson, Kurt Holmquist, Kenneth D. Ko, Richard K. Smith
Patented Case
View Patent ↗
Granted: Jul 16, 1996
Filed: Jun 14, 1993
Inventors
Gordon Bremer
Joseph Q. Chapman
P. Michael Henderson
Kurt Holmquist
Kenneth D. Ko
Richard K. Smith
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.