Granted Patent
Utility
US 6,829,027 · App. 10/452,414
Controlled angle retarder
Inventor:
Douglas J. McKnight
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: May 30, 2003
Inventor
Douglas J. McKnight
Assignee (at issue)
Brillian 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.