Granted Patent
Utility
US 4,362,572 · App. 06/277,276
Method and apparatus for cleaning ink jet printer heads
Inventor:
Harry L. Wallace
Patented Case
View Patent ↗
Granted: Dec 7, 1982
Filed: Jun 25, 1981
Inventor
Harry L. Wallace
Assignee (at issue)
Burroughs, 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.