Granted Patent
Utility
US 4,374,436 · App. 06/198,234
System for the monitoring and restoration of series terminals in a looped communication system
Inventor:
Thomas R. Armstrong
Patented Case
View Patent ↗
Granted: Feb 15, 1983
Filed: Oct 17, 1980
Inventor
Thomas R. Armstrong
Assignee (at issue)
PARADYNE CORPORATION
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.