Granted Patent
Utility
US 5,707,326 · App. 08/699,086
Charging roller with blended ceramic layer
Inventor:
Bruce E. Hyllberg
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Aug 16, 1996
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.