Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Reexamination Certificate
2007-10-23
2007-10-23
Lefkowitz, Edward (Department: 2862)
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
For small object detection or location
C324S067000
Reexamination Certificate
active
10759747
ABSTRACT:
An electronic marker locator with a digital architecture for providing accurate and consistent estimation of the signal strength is presented. The marker locator includes a Digital Phase-Locked Loop (DPLL) structure. The electronic marker locator transmits known and adjustable frequency bursts corresponding to the markers to be located while synchronously capturing the signals returned from the markers.
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Office action dated Feb. 21, 2007, from U.S. Appl No. 11/590,267.
Overby Johan D.
Waite James W.
Lefkowitz Edward
Metrotech Corporation, Inc.
Whittington Kenneth J
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