Granted Patent
Utility
US 4,691,382 · App. 06/687,645
Battery saving signal generating circuit
Inventor:
Takeshi Nakajima
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Dec 31, 1984
Inventor
Takeshi Nakajima
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.