Granted Patent
Utility
US 4,215,243 · App. 05/961,849
Automatic modem identification system
Inventor:
Ronald K. Maxwell
Patented Case
View Patent ↗
Granted: Jul 29, 1980
Filed: Nov 17, 1978
Inventor
Ronald K. Maxwell
Assignee (at issue)
Racal-Vadic, 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.