Granted Patent
Utility
US 5,600,414 · App. 08/402,805
Charging roller with blended ceramic layer
Inventor:
Bruce E. Hyllberg
Patented Case
View Patent ↗
Granted: Feb 4, 1997
Filed: Mar 13, 1995
Inventor
Bruce E. Hyllberg
Assignee (at issue)
American Roller Company, LLC
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.