Granted Patent
Utility
US 5,565,619 · App. 08/338,905
Methods and apparatus for monitoring water process equipment
Inventors:
Eric A. Thungstrom, Paul R. Burgmayer
Patented Case
View Patent ↗
Granted: Oct 15, 1996
Filed: Nov 14, 1994
Inventors
Eric A. Thungstrom
Paul R. Burgmayer
Assignee (at issue)
Betz Laboratories, 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.