United States Patent and Trademark Office OG Notices: 13 December 2005

                                  Disclaimer


   6,848,515 - Alan Orr, Tulsa, OK, (US); Mark Trevithick, Houston, TX
(US). MODULAR DRILLING RIG SUBSTRUCTURE. Patent dated Feb 1, 2005.
Disclaimer and dedication filed Oct. 21, 2005, by  the assignee, Helmerich
& Payne, Inc.

   Hereby enters this disclaimer to claims 1-44, of said patent.