Granted Patent
Utility
US 5,802,402 · App. 08/834,451
Camera back including improved film assemblage
Inventors:
Irving S. Lippert, Thomas H. Campbell, Jr., Edward H. Coughlin
Patented Case
View Patent ↗
Granted: Sep 1, 1998
Filed: Apr 15, 1997
Inventors
Irving S. Lippert
Thomas H. Campbell, Jr.
Edward H. Coughlin
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.