Granted Patent
Utility
US 4,610,011 · App. 06/668,343
Controller for a multistage space switching network
Inventor:
Johannes Drayyer
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Nov 5, 1984
Inventor
Johannes Drayyer
Assignee (at issue)
GTE Communication Systems 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.