Granted Patent
Utility
US 5,780,921 · App. 08/703,405
Bipolar transistor constant voltage source circuit
Inventor:
Masafumi Mitsuishi
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Aug 26, 1996
Inventor
Masafumi Mitsuishi
Assignee (at issue)
NEC 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.