Granted Patent
Utility
US 6,052,058 · App. 09/171,896
Filter integrity monitoring system
Inventor:
Ronald Knox
Patented Case
View Patent ↗
Granted: Apr 18, 2000
Filed: Oct 28, 1998
Inventor
Ronald Knox
Assignee (at issue)
Vision Products Pty. Ltd.
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.