Granted Patent
Utility
US 6,813,962 · App. 10/256,760
Distributed sound speed measurements for multiphase flow measurement
Inventors:
Daniel L. Gysling, Mark R. Myers
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Sep 27, 2002
Inventors
Daniel L. Gysling
Mark R. Myers
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.