Granted Patent
Utility
US 5,670,868 · App. 08/546,036
Low-constant voltage supply circuit
Inventors:
Akisada Moriguchi, Osamu Yumoto, Masaharu Hata, Hironori Saito, Teruhisa Azumaguchi
Patented Case
View Patent ↗
Granted: Sep 23, 1997
Filed: Oct 20, 1995
Inventors
Akisada Moriguchi
Osamu Yumoto
Masaharu Hata
Hironori Saito
Teruhisa Azumaguchi
Assignee (at issue)
HITACHI, 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.