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Patent Assignment Assignor Details
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Assignor Name : KEYSTONE ENERGY SERVICES, LLC
Total Assignments: 1
Assignment: 1
Reel/Frame:035814/0158   Pages: 21
Recorded: 06/02/2015
Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
Exec Dt:
06/01/2015
Assignee
1
901 MAIN STREET
11TH FLOOR, TX1-492-11-23
DALLAS, TEXAS 75202
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Correspondence name and address
LINDA R. KASTNER, C/O LATHAM & WATKINS
330 NORTH WABASH
SUITE 2800
CHICAGO, IL 60611

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