Granted Patent
Utility
US 4,368,531 · App. 06/175,780
Frame aligner for digital telecommunications exchange system
Inventor:
Geoffrey Chopping
Patented Case
View Patent ↗
Granted: Jan 11, 1983
Filed: Aug 6, 1980
Inventor
Geoffrey Chopping
Assignee (at issue)
The Plessey Company 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.