Granted Patent
Utility
US 4,814,801 · App. 07/193,802
Instant type camera for receiving a collapsible film cassette
Inventor:
Lawrence M. Douglas
Patented Case
View Patent ↗
Granted: Mar 21, 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.