Granted Patent
Utility
US 6,512,980 · App. 09/421,163
Noise reference sensor for use in a dual sensor towed streamer
Inventor:
Frederick J. Barr
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Oct 19, 1999
Inventor
Frederick J. Barr
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.