Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Reexamination Certificate
2006-12-19
2006-12-19
Patidar, Jay M. (Department: 2862)
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
For small object detection or location
C324S067000
Reexamination Certificate
active
07151375
ABSTRACT:
Discriminating between a cable locating signal and a false cable locating signal is described. A reference signal, which contains a locating signal frequency impressed on it, is transmitted in a way which provides for detection of a phase shift between the locating signal and the false locating signal. Based on the phase shift, a receiver is used to distinguish the locating signal from the false locating signal.
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patent: 6353320 (2002-03-01), Eslambolchi et al.
patent: 7062414 (2006-06-01), Waite et al.
Chau Albert W.
Mercer John E.
Marlin Technology, Inc.
Patidar Jay M.
Pritekau Patent Group, LLC
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