Granted Patent
Utility
US 6,790,109 · App. 10/018,114
Electric rudder propeller of lower installation height
Inventors:
Manfred Heer, Wolfgang Rzadki
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Nov 13, 2002
Inventors
Manfred Heer
Wolfgang Rzadki
Assignees (at issue)
Siemens Aktiengesellschaft
Schottel GmbH & Co. KG
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.