Granted Patent
Utility
US 4,778,286 · App. 07/094,450
Bearing assembly
Inventor:
Satoshi Kadokawa
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Sep 9, 1987
Inventor
Satoshi Kadokawa
Assignee (at issue)
Nippon Seiko 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.