Granted Patent
Utility
US 3,970,362 · App. 05/485,398
Process of producing polarizing optical devices and product thereof
Inventor:
Norman U. Laliberte
Patented Case
View Patent ↗
Granted: Jul 20, 1976
Filed: Jul 3, 1974
Inventor
Norman U. Laliberte
Assignee (at issue)
American Optical 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.