Granted Patent
Utility
US 4,716,092 · App. 06/902,774
Transparency film assemblage and roller assembly for use therewith
Inventor:
Paul B. Mason
Patented Case
View Patent ↗
Granted: Dec 29, 1987
Filed: Sep 2, 1986
Inventor
Paul B. Mason
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.