Granted Patent
Utility
US 5,489,566 · App. 08/179,516
Thermographic recording films
Inventors:
Edward J. Dombrowski, John R. McPherson, Sr.
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Jan 10, 1994
Inventors
Edward J. Dombrowski
John R. McPherson, Sr.
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.