Granted Patent
Utility
US 6,206,574 · App. 09/193,382
Ball bearing and method of assembling the same
Inventors:
Hirotetsu Sonoda, Tatsuya Fukushima
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Nov 17, 1998
Inventors
Hirotetsu Sonoda
Tatsuya Fukushima
Assignee (at issue)
Bosch Braking Systems 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.