Granted Patent
Utility
US 4,990,802 · App. 07/541,183
ESD protection for output buffers
Inventor:
Yehuda Smooha
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Jun 19, 1990
Inventor
Yehuda Smooha
Assignee (at issue)
AT&T Bell Laboratories
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.