Granted Patent
Utility
US 4,884,088 · App. 07/274,504
Kit for converting 35 mm camera for use with self-developing transparency film
Inventor:
Donald E. Mauchan
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Nov 21, 1988
Inventor
Donald E. Mauchan
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.