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Patent
   D620510
Priority
Mar 23 2006
Filed
Feb 26 2008
Issued
Jul 27 2010
Expiry
Jul 27 2024
Inventors
Hall, Davi…
Assg.orig
Schlumberg…
Assg.curr
Schlumberg…
Entity
unknown
Referenced by
13
References
152
Maint.:
n/a
The ornamental design for a drill bit, as shown and described.

FIG. 1 is a bottom perspective view of the drill bit.

FIG. 2 is a side view of the drill bit with an enlarged detail; and,

FIG. 3 is a perspective view of the drill bit.

The broken line showing of the drill bit is included for the purpose of illustrating portions of the drill bit and forms no part of the claimed invention.
INVENTORS:

Hall, David R.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
8020471, Nov 21 2005 Schlumberger Technology Corporation Method for manufacturing a drill bit
8281882, Nov 21 2005 Schlumberger Technology Corporation Jack element for a drill bit
8360174, Nov 21 2005 Schlumberger Technology Corporation Lead the bit rotary steerable tool
8522897, Nov 21 2005 Schlumberger Technology Corporation Lead the bit rotary steerable tool
8701799, Apr 29 2009 Schlumberger Technology Corporation Drill bit cutter pocket restitution
D674422, Feb 12 2007 NOVATEK IP, LLC Drill bit with a pointed cutting element and a shearing cutting element
D678368, Feb 12 2007 NOVATEK IP, LLC Drill bit with a pointed cutting element
D708238, Jun 12 2013 Drill bit
D760307, May 12 2014 SUMITOMO ELECTRIC HARDMETAL CORP. Cutting work body
D875147, May 10 2018 SEED TECHNOLOGIES CORP., LTD. Drill bit
D924949, Jan 11 2019 US Synthetic Corporation Cutting tool
D947910, Jan 11 2019 US Synthetic Corporation Drill bit
ER3469,
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ASSIGNMENT RECORDS    Assignment records on the USPTO
///
Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 26 2008Schlumberger Technology Corporation(assignment on the face of the patent)
Aug 06 2008HALL, DAVID R NOVADRILL, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0217010758 pdf
Jan 22 2010HALL, DAVID R , MR Schlumberger Technology CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0239730849 pdf
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