Granted Patent
Utility
US 5,187,522 · App. 07/802,595
Magnetic monitor for measuring toner concentration
Inventor:
William A. Resch, III
Patented Case
View Patent ↗
Granted: Feb 16, 1993
Filed: Dec 5, 1991
Inventor
William A. Resch, III
Assignee (at issue)
EASTMAN KODAK 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.