Method and apparatus for control and location of an instrument or appliance
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United States of America Patent
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Feb 23, 2010
Grant Date -
Dec 29, 2005
app pub date -
Jun 10, 2003
filing date -
Jun 10, 2002
priority date (Note) -
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Abstract
The invention relates to an apparatus for location of an instrument or appliance having at least one magnet which produces a magnetic moment at right angles to the appliance shaft and can be rotated independently of the instrument or appliance. This results in a location system which allows precise location at an accurate time, determination of the axis direction and control of an appliance which is being operated in a channel or medium.
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