Granted Patent
Utility
US 5,909,239 · App. 08/889,478
Video telephone and method for changing communication mode during communication
Inventor:
Surg-June Lee
Patented Case
View Patent ↗
Granted: Jun 1, 1999
Filed: Jul 8, 1997
Inventor
Surg-June Lee
Assignee (at issue)
SAMSUNG DISPLAY CO., LTD.
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.