Granted Patent
Utility
US 5,488,677 · App. 08/397,076
Electric field sensor
Inventor:
Yuichi Tokano
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Mar 7, 1995
Inventor
Yuichi Tokano
Assignee (at issue)
TOKIN CORPORATION
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.