Granted Patent
Utility
US 5,509,054 · App. 08/155,047
Communication switching system
Inventor:
Stuart Mandel Garland
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Nov 19, 1993
Inventor
Stuart Mandel Garland
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.