Granted Patent
Utility
US 5,818,222 · App. 08/473,225
Method for adjusting ferrous article proximity detector
Inventor:
Edward A. Ramsden
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Jun 7, 1995
Inventor
Edward A. Ramsden
Assignee (at issue)
CHERRY GMBH
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.