Granted Patent
Utility
US 6,764,181 · App. 10/147,274
Polarization arrangement
Inventors:
Simon Magarill, John D. Rudolph
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: May 16, 2002
Inventors
Simon Magarill
John D. Rudolph
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.