Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Reexamination Certificate
2008-07-15
2008-07-15
Dang, Hoang (Department: 3672)
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Indicating, testing or measuring a condition of the formation
C175S040000
Reexamination Certificate
active
11277394
ABSTRACT:
In some aspects of the present invention, a drill bit assembly has a body portion intermediate a shank portion and a working portion. The working portion has at least one cutting element. In some embodiments, the drill bit assembly has a shaft with an end substantially coaxial to a central axis of the assembly. The end of the shaft substantially protrudes from the working portion, and at least one downhole logging device is disposed within or in communication with the shaft.
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Durrand Christopher J.
Hall David R.
Leany Francis
Turner Paula
Dang Hoang
Schramm Paul M.
Wilde Tyson J.
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