Granted Patent
Utility
US 4,591,646 · App. 06/633,697
Photographic products and processes
Inventors:
Frank A. Meneghini, Paul S. Palumbo
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Jul 23, 1984
Inventors
Frank A. Meneghini
Paul S. Palumbo
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.