Granted Patent
Utility
US 4,623,221 · App. 06/701,629
Device for providing a substantially flat light field
Inventor:
Joseph E. Marchegiano
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: Feb 14, 1985
Inventor
Joseph E. Marchegiano
Assignee (at issue)
RCA 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.