Granted Patent
Utility
US 5,019,771 · App. 07/527,661
Contact sensing for integrated circuit testing
Inventors:
Tsen-Shau Yang, Ger-Chih Chou, Fu-Chieh Hsu
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: May 21, 1990
Inventors
Tsen-Shau Yang
Ger-Chih Chou
Fu-Chieh Hsu
Assignee (at issue)
Knights Technology, 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.