发明名称 |
Electronic time stamping apparatus for use with an inground transmitter |
摘要 |
A device is described for use as part of a system in which a transmitter is moved through the ground while transmitting a signal that can be used to locate the transmitter. The device includes a receiver for receiving the signal to generate certain information about the position of the transmitter relative to the position of the device based on the signal. A processor establishes a current location of the transmitter and records 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 records a time stamp that designates at least the time at which the current location was recorded as part of the series of recorded locations of the transmitter. |
申请公布号 |
US8710844(B2) |
申请公布日期 |
2014.04.29 |
申请号 |
US201213461120 |
申请日期 |
2012.05.01 |
申请人 |
MERCER JOHN E.;MERLIN TECHNOLOGY INC. |
发明人 |
MERCER JOHN E. |
分类号 |
G01V3/08;E21B47/022;G01V3/10;G01V3/11;G01V3/15;G01V3/165;G01V3/26 |
主分类号 |
G01V3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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