Granted Patent
Utility
US 5,870,028 · App. 08/829,550
Input expansion for crosspoint switch module
Inventor:
John E. Liron
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Mar 28, 1997
Inventor
John E. Liron
Assignee (at issue)
Tektronix, Inc.
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.