Granted Patent
Utility
US 5,907,206 · App. 08/899,145
Rotor for electric motors
Inventors:
Tsuyoshi Shiga, Takeshi Yamada
Patented Case
View Patent ↗
Granted: May 25, 1999
Filed: Jul 23, 1997
Inventors
Tsuyoshi Shiga
Takeshi Yamada
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.