Granted Patent
Utility
US 5,755,503 · App. 08/554,968
Optical illumination system having improved efficiency and uniformity and projection instrument comprising such a system
Inventors:
Kuang-Yu Chen, San-Ming Chen, Zu-Deh Hao
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Nov 13, 1995
Inventors
Kuang-Yu Chen
San-Ming Chen
Zu-Deh Hao
Assignee (at issue)
Industrial Technology Research Institute
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.