Granted Patent
Utility
US 5,633,780 · App. 08/634,170
Electrostatic discharge protection device
Inventor:
David Cronin
Patented Case
View Patent ↗
Granted: May 27, 1997
Filed: Apr 18, 1996
Inventor
David Cronin
Assignee (at issue)
Polaroid 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.