Granted Patent
Utility
US 4,468,448 · App. 06/500,366
Photographic products and processes
Inventor:
Howard G. Rogers
Patented Case
View Patent ↗
Granted: Aug 28, 1984
Filed: Jun 2, 1983
Inventor
Howard G. Rogers
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.