Granted Patent
Utility
US 6,431,928 · App. 09/786,356
Arrangement and method for turning a propulsion unit
Inventor:
Jussi Aarnivuo
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: May 3, 2001
Inventor
Jussi Aarnivuo
Assignee (at issue)
ABB Azipod Oy
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.