Granted Patent
Utility
US 4,456,783 · App. 06/444,059
Multielement optical panel
Inventor:
James Baker
Patented Case
View Patent ↗
Granted: Jun 26, 1984
Filed: Nov 23, 1982
Inventor
James Baker
Assignee (at issue)
Polaroid 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.