Granted Patent
Utility
US 4,917,469 · App. 07/214,532
Addressing liquid crystal cells
Inventor:
Peter Ross
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Jul 1, 1988
Inventor
Peter Ross
Assignee (at issue)
STC PLC
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.