Granted Patent
Utility
US 5,574,531 · App. 08/410,147
Method of and apparatus for lighttight transferring of film
Inventor:
Lawrence J. Salvo
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: Mar 24, 1995
Inventor
Lawrence J. Salvo
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.