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Patent Assignment Abstract of Title
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Total Assignments: 2
Patent #:
7839719
Issue Dt:
11/23/2010
Application #:
12393830
Filing Dt:
02/26/2009
Publication #:
20090224193
Pub Dt:
09/10/2009
Inventors:
Anthony R. Dopf, Trang Le, Derek Logan, Wendall Siemens, Dave Switzer, Timothy Neff
Title:
FLUID EROSION PROTECTION WASHER FOR ROTATING SHAFT IN MWD TOOL
Assignment: 1
Reel/Frame:
022318/0536Recorded: 02/26/2009Pages: 6
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors:
DOPF, ANTHONY R.
Exec Dt:
05/23/2007
LE, TRANG
Exec Dt:
05/29/2007
LOGAN, DEREK
Exec Dt:
05/25/2007
NEFF, TIMOTHY
Exec Dt:
05/28/2007
SIEMENS, WENDALL
Exec Dt:
05/23/2007
SWITZER, DAVE
Exec Dt:
05/23/2007
Assignee:
EXTREME ENGINEERING LTD.
BAY 14, 5925-12TH STREET S.E.
CALGARY, CANADA T2H 2M3
Correspondent:
SCHWABE, WILLIAMSON & WYATT, P.C.
1420 5TH AVENUE, SUITE 3010
SEATTLE, WA 98101
Assignment: 2
Reel/Frame:
022318/0637Recorded: 02/26/2009Pages: 6
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
EXTREME ENGINEERING LTD.
Exec Dt:
06/12/2008
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Correspondent:
SCHWABE, WILLIAMSON & WYATT, P.C.
1420 5TH AVENUE, SUITE 3010
SEATTLE, WA 98101

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