Granted Patent
Utility
US 6,190,015 · App. 09/368,520
Liquid crystal display projector with a lens shading device capable shading and positioning lens
Inventors:
Willy Tsai, Ho-Lung Lu
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Aug 5, 1999
Inventors
Willy Tsai
Ho-Lung Lu
Assignee (at issue)
Mustek Systems Inc.
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.