Granted Patent
Utility
US 4,864,848 · App. 07/162,185
Leak detection system
Inventor:
Gerald O. Irvine
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Feb 29, 1988
Inventor
Gerald O. Irvine
Assignee (at issue)
Minnesota Automation, 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.