Granted Patent
Utility
US 6,726,332 · App. 10/302,183
TIR prism for DMD projector
Inventors:
Bruce Cannon, Peter Oehler
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Nov 22, 2002
Inventors
Bruce Cannon
Peter Oehler
Assignee (at issue)
3M INNOVATIVE PROPERTIES COMPANY
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.