Granted Patent
Utility
US 6,328,072 · App. 09/592,238
Universal safety device and process for protecting a pipeline
Inventors:
Jean-Luc Mahe, Daniel Giraud, David Leme, Robert Drouvin
Patented Case
View Patent ↗
Granted: Dec 11, 2001
Filed: Jun 12, 2000
Inventors
Jean-Luc Mahe
Daniel Giraud
David Leme
Robert Drouvin
Assignee (at issue)
Gaz de France-(GDF) Service National
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.