Granted Patent
Utility
US 5,920,421 · App. 08/988,450
Thin film actuated mirror array in an optical projection system and method for manufacturing the same
Inventor:
Yoon-Joon Choi
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Dec 10, 1997
Inventor
Yoon-Joon Choi
Assignee (at issue)
Daewoo Electronics 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.