Granted Patent
Utility
US 5,697,501 · App. 08/577,920
Electrostatic discharge protection device
Inventor:
Arnold W. Johansen
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Dec 21, 1995
Inventor
Arnold W. Johansen
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.