Granted Patent
Utility
US 5,415,969 · App. 08/132,534
Image-receiving element for diffusion transfer photographic film products
Inventor:
Kenneth C. Waterman
Patented Case
View Patent ↗
Granted: May 16, 1995
Filed: Oct 6, 1993
Inventor
Kenneth C. Waterman
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.