Granted Patent
Utility
US 5,562,489 · App. 08/278,024
Electrostatic discharge protection device
Inventor:
David Cronin
Patented Case
View Patent ↗
Granted: Oct 8, 1996
Filed: Jul 20, 1994
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.