Granted Patent
Utility
US 6,575,580 · App. 09/819,734
Lighting system and projection type display unit using thereof
Inventors:
Shinji Okamori, Shinsuke Shikama
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Mar 29, 2001
Inventors
Shinji Okamori
Shinsuke Shikama
Assignee (at issue)
MITSUBISHI ELECTRIC 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.