Granted Patent
Utility
US 4,889,784 · App. 07/262,397
Organic photoconductors with improved wear
Inventors:
Robert B. Champ, Meredith D. Shattuck, Donald A. Stremel
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Oct 25, 1988
Inventors
Robert B. Champ
Meredith D. Shattuck
Donald A. Stremel
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.