Granted Patent
Utility
US 6,301,193 · App. 09/270,553
Floatation device for marine seismic energy sources
Inventors:
Dallas J. Martin, David C. Charvoz
Patented Case
View Patent ↗
Granted: Oct 9, 2001
Filed: Mar 16, 1999
Inventors
Dallas J. Martin
David C. Charvoz
Assignee (at issue)
Input/Output, 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.