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.