Granted Patent
Utility
US 4,458,709 · App. 06/134,491
Method and apparatus for measuring and controlling fluid flow rates
Inventor:
Carl M. Springer
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Mar 27, 1980
Inventor
Carl M. Springer
Assignee (at issue)
Binks Manufacturing Company
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.