Granted Patent
Utility
US 6,809,877 · App. 10/459,520
Zoom lens and projection display device using the same
Inventor:
Akiko Nagahara
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Jun 12, 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.