Granted Patent
Utility
US 5,459,598 · App. 08/256,545
Optical modulation device with liquid crystal voids formed by the spacer arrangements
Inventor:
Andrew N. Carrington
Patented Case
View Patent ↗
Granted: Oct 17, 1995
Filed: Jul 13, 1994
Inventor
Andrew N. Carrington
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.