Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Gregor Ponert0
Date of Patent
October 30, 2007
0Patent Application Number
112516200
Date Filed
October 14, 2005
0Patent Primary Examiner
Patent abstract
A magnetic field sensor is provided alongside a roadway in order to detect vehicles. A permanent magnet is installed in the roadway at such a distance from the magnetic field sensor that the magnetic field of the permanent magnet is stronger than the geomagnetic field at the magnetic field sensor
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