United States Patent and Trademark Office, Patent Assignment 15988/77:
Assignment Of Assignors Interest

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Assignor
Assignee

Williams Companies, Inc.
Paperwork Executed March 21, 2004

Transfer

Recorded
March 31, 2005

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Flint Hills Resources, LLC

Flint Hills Resources, LLC
4111 East 37th Street North
Wichita, KS 67220

Patents
Correspondent

Tank Steam-out Cap

USX0Patent Application No. 10224714, Filed August 21, 2002

USB1Utility Patent No. 6941873, Issued September 13, 2005

R Alan Weeks
Fellers Snider Blankenship Bailey & Tippens, PC
321 S. Boston Avenue
Suite 800
Tulsa, OK 74103-3318
Phone: +1 918 587 2000

Updated September 13, 2005

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