Granted Patent
Utility
US 4,569,040 · App. 06/571,442
Electronic switching system having a time division multiplex switch controller address by central control unit
Inventors:
Anthony J. P. O'Toole, Gordon P. Boot
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: Jan 17, 1984
Inventors
Anthony J. P. O'Toole
Gordon P. Boot
Assignee (at issue)
Plessey Overseas Limited
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.