Granted Patent
Utility
US 4,649,755 · App. 06/685,869
Sensor for magnetizable materials
Inventor:
Hans Volz
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Dec 24, 1984
Inventor
Hans Volz
Assignee (at issue)
International Standard Electric 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.