Granted Patent
Utility
US 6,142,165 · App. 09/151,073
Method and apparatus for installing a branch connector from the top of an excavation
Inventors:
Christian Wartel, Dominique Pfeiffer, Patrick Le Cointe
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Sep 10, 1998
Inventors
Christian Wartel
Dominique Pfeiffer
Patrick Le Cointe
Assignee (at issue)
Gaz de France
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.