Granted Patent
Utility
US 6,239,520 · App. 09/558,406
Permanent magnet rotor cooling system and method
Inventors:
David Stahl, Phillip Vessa
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Apr 24, 2000
Inventors
David Stahl
Phillip Vessa
Assignee (at issue)
Capstone Turbine 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.