Granted Patent
Utility
US 5,216,166 · App. 07/717,542
Infra-red sensitive photographic materials
Inventors:
Ronald W. Burrows, Kevin P. Hall
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Jun 19, 1991
Inventors
Ronald W. Burrows
Kevin P. Hall
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.