4. Telecommunications
  5. Radiotelephone system
  6. Security or fraud prevention

Thorkild Hansen

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Apparatus and method for locating subsurface objects in...

Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Reexamination Certificate

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Method and apparatus for detecting leaks in buried pipes by...

Communications: directive radio wave systems and devices (e.g. – Transmission through media other than air or free space
Reexamination Certificate

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Method and apparatus for determining the direction of...

Communications: electrical – Selective – Interrogation response
Reexamination Certificate

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Method and apparatus for improving the efficiency and...

Communications: electrical – Selective – Interrogation response
Reexamination Certificate

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Method and apparatus for locating objects using parametric...

Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2347228

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