Granted Patent
Utility
US 4,613,843 · App. 06/663,523
Planar coil magnetic transducer
Inventors:
Michael J. Esper, Russell J. Haeberle, Brian G. Winegar
Patented Case
View Patent ↗
Granted: Sep 23, 1986
Filed: Oct 22, 1984
Inventors
Michael J. Esper
Russell J. Haeberle
Brian G. Winegar
Assignee (at issue)
Ford Motor Company
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.