Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Reexamination Certificate
2007-10-16
2007-10-16
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
11501618
ABSTRACT:
In a method of identifying a passive electromagnetic signal emitted from an underground utility, a portable above-ground antenna is disposed at a location at which the passive electromagnetic signal is expected. Measurement signals are received from the antenna corresponding to electromagnetic signals received by the antenna. The measurement signals are measured at a plurality of different frequency bands within a measurement frequency range expected to include a frequency of the passive electromagnetic signal, and at least one of the plurality of frequency bands is selected based on a predetermined criteria applied to the measurements.
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Operation Manual for “Micro-Computerized Pipe & Cable Locator,” Takachiho Sangyo Co., LTD.
McLaughlin Manufacturing Company, Inc.
Nelson Mullins Riley & Scarborough LLP
Patidar Jay M
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