Granted Patent
Utility
US 5,382,898 · App. 07/947,935
High density probe card for testing electrical circuits
Inventor:
Eswar Subramanian
Patented Case
View Patent ↗
Granted: Jan 17, 1995
Filed: Sep 21, 1992
Inventor
Eswar Subramanian
Assignee (at issue)
Cerprobe 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.