Granted Patent
Utility
US 6,491,401 · App. 09/794,360
Projection type picture display apparatus
Inventor:
Toshitaka Tachibana
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Feb 28, 2001
Inventor
Toshitaka Tachibana
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.