Granted Patent
Utility
US 5,795,048 · App. 08/598,957
Over head projector apparatus and control method
Inventor:
Sachio Umei
Patented Case
View Patent ↗
Granted: Aug 18, 1998
Filed: Feb 9, 1996
Inventor
Sachio Umei
Assignee (at issue)
Samsung Aerospace Industries, 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.