Granted Patent
Utility
US 5,287,023 · App. 07/973,575
Reverse-bias control circuit for a voltage-driven switching element
Inventor:
Tadashi Miyasaka
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Nov 9, 1992
Inventor
Tadashi Miyasaka
Assignee (at issue)
FUJI ELECTRIC CO., LTD.
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.