Electricity: conductors and insulators – Conduits – cables or conductors – Conductive armor or sheath
Reexamination Certificate
2005-12-01
2009-06-02
Mayo, III, William H (Department: 2831)
Electricity: conductors and insulators
Conduits, cables or conductors
Conductive armor or sheath
Reexamination Certificate
active
07541543
ABSTRACT:
An electrically powered tool down in a borehole is suspended from a cable that also supplies electrical power to the tool. The cable has a conducting member of sufficient tensile strength to support the majority of the weight of the tool and an insulating layer surrounding the conducting member.
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Mayo, III William H
Wilford Andrew
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