Granted Patent
Utility
US 5,111,317 · App. 07/444,424
Method of driving a ferroelectric liquid crystal shutter having the application of a plurality of controlling pulses for counteracting relaxation
Inventor:
Ian Coulson
Patented Case
View Patent ↗
Granted: May 5, 1992
Filed: Dec 1, 1989
Inventor
Ian Coulson
Assignee (at issue)
Thorn EMI 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.