Granted Patent
Utility
US 4,252,885 · App. 05/888,985
Polyester coated films using an aqueous polyester dispersion and photographic layer
Inventors:
Patrick Terence McGrail, David R. Mann
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Mar 22, 1978
Inventors
Patrick Terence McGrail
David R. Mann
Assignee (at issue)
Bexford Limited
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.