Granted Patent
Utility
US 6,058,786 · App. 09/274,862
Device for measuring a gas flow
Inventors:
Lars Wallen, Carl-Erik Arvidsson
Patented Case
View Patent ↗
Granted: May 9, 2000
Filed: Mar 23, 1999
Inventors
Lars Wallen
Carl-Erik Arvidsson
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.