Granted Patent
Utility
US 4,138,280 · App. 05/874,416
Method of manufacture of zener diodes
Inventor:
Vladimir Rodov
Patented Case
View Patent ↗
Granted: Feb 6, 1979
Filed: Feb 2, 1978
Inventor
Vladimir Rodov
Assignee (at issue)
International Rectifier 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.