Granted Patent
Utility
US 6,727,616 · App. 10/005,825
Flywheel energy storage system with quill stabilizer
Inventors:
Christopher W. Gabrys, David Campbell
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Nov 8, 2001
Inventors
Christopher W. Gabrys
David Campbell
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.