Communications: electrical – Wellbore telemetering or control – Modification of signal bandwidth – frequency – or circuit...
Reexamination Certificate
2004-07-26
2008-03-04
Edwards, Jr., Timothy (Department: 2612)
Communications: electrical
Wellbore telemetering or control
Modification of signal bandwidth, frequency, or circuit...
C340S854300, C367S081000, C367S082000
Reexamination Certificate
active
07339494
ABSTRACT:
One embodiment includes an apparatus that includes a piezoelectric transducer to generate an acoustic signal that is to modulate along a mandrel, wherein the piezoelectric transducer includes at least one piezoelectric element and at least one electrode that is without non-permanent joints.
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Gardner Wallace R.
Kyle Donald G.
Linyaev Eugene J.
Moore Jeffrey L.
Shah Vimal V.
Edwards, Jr. Timothy
Halliburton Energy Service,s Inc.
Schwegman Lundberg & Woessner, P.A.
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