Granted Patent
Utility
US 4,828,366 · App. 07/129,201
Laser-addressable liquid crystal cell having mark positioning layer
Inventor:
Erik K. Nelson
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Dec 7, 1987
Inventor
Erik K. Nelson
Assignee (at issue)
The Mead 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.