Granted Patent
Utility
US 6,098,467 · App. 09/210,832
Acoustic flow meter wherein false readings are identified dependent on upstream and downstream acoustic transit times
Inventor:
Lars Wallen
Patented Case
View Patent ↗
Granted: Aug 8, 2000
Filed: Dec 15, 1998
Inventor
Lars Wallen
Assignee (at issue)
Siemens Elema AB
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.