Granted Patent
Utility
US 4,333,353 · App. 06/173,012
Two-transducer Doppler flowmeter with swept oscillator
Inventor:
Joseph Baumoel
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Jul 28, 1980
Inventor
Joseph Baumoel
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.