Granted Patent
Utility
US 5,751,307 · App. 08/226,685
Print cartridge cleaning apparatus and method using water and air
Inventors:
Paul J. Paroff, Orrin D. Christy, James M. Schweitzer, Mark A. Matheis
Patented Case
View Patent ↗
Granted: May 12, 1998
Filed: Apr 12, 1994
Inventors
Paul J. Paroff
Orrin D. Christy
James M. Schweitzer
Mark A. Matheis
Assignee (at issue)
Moore Business Forms, 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.