Granted Patent
Utility
US 6,801,367 · App. 10/457,655
Zoom lens and projection display device which uses same
Inventor:
Akiko Nagahara
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Jun 10, 2003
Inventor
Akiko Nagahara
Assignee (at issue)
Fuji Photo Optical Co., 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.