Granted Patent
Utility
US 6,698,297 · App. 10/186,382
Venturi augmented flow meter
Inventor:
Daniel L. Gysling
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Jun 28, 2002
Inventor
Daniel L. Gysling
Assignee (at issue)
Weatherford/Lamb, Inc.
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.