Granted Patent
Utility
US 5,625,243 · App. 08/260,738
Rotor construction in an asynchronous electric machine
Inventors:
Olli Lindgren, Antero Arkkio
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Jun 15, 1994
Inventors
Olli Lindgren
Antero Arkkio
Assignee (at issue)
High Speed Tech Oy Ltd.
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.