Granted Patent
Utility
US 4,913,050 · App. 07/247,903
Self-metering gravity fed ink dispensing roller
Inventors:
Robert Beaver, Arthur L. Piepmeier, Jr., Charles M. Nunally
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Sep 22, 1988
Inventors
Robert Beaver
Arthur L. Piepmeier, Jr.
Charles M. Nunally
Assignee (at issue)
Ormecon GmbH
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.