Granted Patent
Utility
US 4,909,607 · App. 07/032,759
Addressing liquid crystal cells
Inventor:
Peter Ross
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Mar 31, 1987
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.