Granted Patent
Utility
US 4,984,236 · App. 07/296,726
Circuit arrangement for use in the time division multiplexed signalling system
Inventors:
Geoffrey Chopping, Andrew K. Borland
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Jan 13, 1989
Inventors
Geoffrey Chopping
Andrew K. Borland
Assignee (at issue)
The Plessey Company PLC
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.