Granted Patent
Utility
US 6,653,261 · App. 10/180,377
High speed rolling bearing
Inventor:
Motoharu Akiyama
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Jun 26, 2002
Inventor
Motoharu Akiyama
Assignee (at issue)
Minebea Co., 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.