Granted Patent
Utility
US 5,906,161 · App. 08/988,256
Ink roller assembly
Inventor:
John R. Kessler
Patented Case
View Patent ↗
Granted: May 25, 1999
Filed: Dec 10, 1997
Inventor
John R. Kessler
Assignee (at issue)
Monarch Marking Systems, Inc.
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.