Granted Patent
Utility
US 5,847,748 · App. 08/029,492
Multimedia projection system
Inventor:
David P. Laughlin
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: Mar 11, 1993
Inventor
David P. Laughlin
Assignee (at issue)
NCR 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.