Granted Patent
Utility
US 6,536,291 · App. 09/345,827
Optical flow rate measurement using unsteady pressures
Inventors:
Daniel L. Gysling, Rebecca S. McGuinn, Charles Winston
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Jul 2, 1999
Inventors
Daniel L. Gysling
Rebecca S. McGuinn
Charles Winston
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.