Granted Patent
Utility
US 4,515,442 · App. 06/344,658
Optical filter device
Inventor:
Mitchell Aron
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: Feb 1, 1982
Inventor
Mitchell Aron
Assignee (at issue)
ALLIED CONSULTING, INC.
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.