Granted Patent
Utility
US 5,012,289 · App. 07/392,680
Toner metering apparatus
Inventors:
Charles Stanley Aldrich, Steven L. Applegate, James A. Craft, James J. Molloy, Michael L. Pawley
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Aug 11, 1989
Inventors
Charles Stanley Aldrich
Steven L. Applegate
James A. Craft
James J. Molloy
Michael L. Pawley
Assignee (at issue)
International Business Machines 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.