Granted Patent
Utility
US 4,528,996 · App. 06/564,264
Orifice plate cleaning system
Inventor:
David E. Jones
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: Dec 22, 1983
Inventor
David E. Jones
Assignee (at issue)
The Mead Corporation
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.