Granted Patent
Utility
US 6,770,989 · App. 10/317,627
Linear motor having an improved stator and shifter
Inventors:
Naoomi Miyagawa, Toshihiko Inoue
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Dec 12, 2002
Inventors
Naoomi Miyagawa
Toshihiko Inoue
Assignee (at issue)
Tsunehiko Yamazaki
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.