Granted Patent
Utility
US 5,500,605 · App. 08/121,850
Electrical test apparatus and method
Inventor:
David Chang
Patented Case
View Patent ↗
Granted: Mar 19, 1996
Filed: Sep 17, 1993
Inventor
David Chang
Assignee (at issue)
AT&T CORP.
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.