Granted Patent
Utility
US 6,415,867 · App. 09/603,246
Aluminum riser apparatus, system and method
Inventors:
Hans Herman Jacques Deul, Peter Mackinnon Keith Campsie, Mikhail Yakovlevich Gelfgat
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Jun 23, 2000
Inventors
Hans Herman Jacques Deul
Peter Mackinnon Keith Campsie
Mikhail Yakovlevich Gelfgat
Assignee (at issue)
NOBLE DRILLING CORPORATION
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.