Granted Patent
Utility
US 4,866,381 · App. 07/190,475
Plural magnet device for magnetically detecting rotation angle of a rotary body
Inventor:
Abe Tatsuhiko
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: May 4, 1988
Inventor
Abe Tatsuhiko
Assignee (at issue)
Diesel Kiki 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.