Granted Patent
Utility
US 6,428,372 · App. 09/928,063
Water jet propulsion unit with retractable rudder
Inventor:
Fletcher C. Belt
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Aug 11, 2001
Inventor
Fletcher C. Belt
Assignee (at issue)
Bombardier Motor Corporation of America
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.