Granted Patent
Utility
US 5,642,380 · App. 07/892,926
Data communication system and modem therefor
Inventor:
Claude Lambert
Patented Case
View Patent ↗
Granted: Jun 24, 1997
Filed: Jun 3, 1992
Inventor
Claude Lambert
Assignee (at issue)
Dataradio, 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.