Granted Patent
Utility
US 4,827,297 · App. 07/193,658
Photographic film assemblage having instant film
Inventor:
Lawrence M. Douglas
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: May 13, 1988
Inventor
Lawrence M. Douglas
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.