Granted Patent
Utility
US 6,597,409 · App. 09/494,509
Video projector
Inventors:
Yukinori Shioya, Masao Imai
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Jan 31, 2000
Inventors
Yukinori Shioya
Masao Imai
Assignee (at issue)
NEC Viewtechnology, 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.