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Method and apparatus for determining position in a pipe

  • US 9,140,818 B2
  • Filed: 11/22/2011
  • Issued: 09/22/2015
  • Est. Priority Date: 08/28/1998
  • Status: Expired due to Term
First Claim
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1. A fluid pipeline comprising:

  • a pipe having a plurality of sections with adjoining sections defining a joint including a gap therebetween; and

    at least one radio frequency identification device installed within said pipe and configured to receive a radio frequency signal from a transmitter in the pipe and to provide a distinct response signal, wherein each of said at least one radio frequency identification device is installed within the gap of a different one of the joints defined between adjoining sections of the pipe.

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  • 3 Assignments
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