Granted Patent
Utility
US 4,849,320 · App. 07/045,022
Method of forming images
Inventors:
Edward Irving, Christopher P. Banks
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Apr 30, 1987
Inventors
Edward Irving
Christopher P. Banks
Assignee (at issue)
Ciba-Geigy
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.