Granted Patent
Utility
US 6,614,211 · App. 09/283,499
Non-contact detector for sensing a periodically varying magnetic field
Inventor:
Phillip Douglas
Patented Case
View Patent ↗
Granted: Sep 2, 2003
Filed: Apr 1, 1999
Inventor
Phillip Douglas
Assignee (at issue)
Santronics, Inc.
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.