Granted Patent
Utility
US 4,466,456 · App. 06/443,232
Programmable multiport switch
Inventor:
Gary P. Hansen
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Nov 22, 1982
Inventor
Gary P. Hansen
Assignee (at issue)
Red Dot 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.