Granted Patent
Utility
US 5,723,783 · App. 08/213,605
Acoustic displacement flowmeter
Inventor:
William Woodward
Patented Case
View Patent ↗
Granted: Mar 3, 1998
Filed: Mar 15, 1994
Inventor
William Woodward
Assignee (at issue)
J & W Scientific, Incorporated
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.