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Electronic time stamping apparatus as a part of a system for use with an inground transmitter

  • US 9,310,509 B2
  • Filed: 04/01/2014
  • Issued: 04/12/2016
  • Est. Priority Date: 03/14/1996
  • Status: Expired due to Fees
First Claim
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1. An apparatus for use as part of a system in which a transmitter is moved through the ground within a region while transmitting a signal for locating the transmitter, said apparatus comprising:

  • a receiver for receiving the signal to generate certain information about the position of the transmitter relative to the position of the apparatus based on the signal; and

    a processor that is configured for establishing a current location of the transmitter and for electronically recording the current location as one of a series of recorded locations of the transmitter based on the certain information and, at a time of recording the current location, electronically recording a time stamp that designates at least a date on which the current location was recorded as part of the series of recorded locations of the transmitter.

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