Granted Patent
Utility
US 6,688,771 · App. 10/061,173
Retainer for rolling bearing
Inventors:
Shigenori Hoya, Sumio Sato
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Feb 4, 2002
Inventors
Shigenori Hoya
Sumio Sato
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.