Granted Patent
Utility
US 4,901,308 · App. 07/343,086
Digital bridge for a time slot interchange digital switched matrix
Inventor:
Stephen A. Deschaine
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Apr 25, 1989
Inventor
Stephen A. Deschaine
Assignee (at issue)
DSC Communications 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.