Granted Patent
Utility
US 5,038,621 · App. 07/569,950
Variable area obstruction gas flow meter
Inventor:
Josef J. Stupecky
Patented Case
View Patent ↗
Granted: Aug 13, 1991
Filed: Aug 20, 1990
Inventor
Josef J. Stupecky
Assignee (at issue)
Bicore Monitoring Systems
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.