Granted Patent
Utility
US 5,757,101 · App. 08/689,477
Laminated back iron structrue for increased motor efficiency
Inventors:
Zine-Eddine Boutaghou, Richard W. Luoma
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Aug 8, 1996
Inventors
Zine-Eddine Boutaghou
Richard W. Luoma
Assignee (at issue)
International Business Machines 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.