Granted Patent
Utility
US 4,832,459 · App. 07/060,931
Backlighting for electro-optical passive displays and transflective layer useful therewith
Inventors:
William P. Harper, Michael Lunt
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: May 27, 1987
Inventors
William P. Harper
Michael Lunt
Assignee (at issue)
ROGERS 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.