Granted Patent
Utility
US 6,270,686 · App. 09/288,613
Method of making a weak-field magnetic field sensor having etched circuit coils
Inventor:
Yasuhiro Tamura
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Apr 9, 1999
Inventor
Yasuhiro Tamura
Assignee (at issue)
AP One System 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.