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Absolute property measurement with air calibration

  • US RE39,206 E1
  • Filed: 02/13/2003
  • Issued: 07/25/2006
  • Est. Priority Date: 10/29/1997
  • Status: Expired due to Term
First Claim
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1. A sensor comprising:

  • a primary wincing meandering in a back and forth square wave-like pattern and having a plurality of parallel legs, a half wavelength defined by the space between a pair of adjacent parallel legs;

    a plurality of sensing elements, the sensing elements interposed between the legs of the primary winding, dummy sensing elements located in half wavelengths at ends of the primary winding for maintaining the periodicity of the field for the sensing elements.

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