Granted Patent
Utility
US 4,816,739 · App. 07/232,190
DC/DC converter
Inventors:
Tadashi Sakurai, Masahiro Kojima
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: Aug 15, 1988
Inventors
Tadashi Sakurai
Masahiro Kojima
Assignee (at issue)
Motorola, Inc.
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.