Granted Patent
Utility
US 4,171,528 · App. 05/957,494
Solderable zener diode
Inventor:
Harry C. Kling
Patented Case
View Patent ↗
Granted: Oct 16, 1979
Filed: Nov 3, 1978
Inventor
Harry C. Kling
Assignee (at issue)
International Telephone and Telegraph 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.