United States Patent and Trademark Office OG Notices: 15 July 2003

                          Disclaimers and Dedications

   4,874,128 - S. Hudson Owen, Marshfield, Wis. RAIL-TIE FASTENING
ASSEMBLY. Patent dated Oct. 17, 1989. Disclaimer and dedication filed
Apr. 30, 2003, by the assignee, Kerr-McGee Chemical LLC.

   Hereby disclaims and dedicates to the Public, the remaining
term of said patent.

   5,078,319 - S. Hudson Owen, Marshfield, Wis.; Paul A. Wolff,
Oklahoma City, Okla. RAIL-TIE FASTENING SYSTEMS. Patent dated Jan. 7,
1992. Disclaimer and dedication filed Apr. 30, 2003, by the assignee,
Kerr-McGee Chemical LLC.

   Hereby disclaims and dedicates to the Public, the remaining
term of said patent.

   5,096,117 - S. Hudson Owen, Marshfield, Wis. RAILROAD GRADE
CROSSINGS. Patent dated Mar. 17, 1992. Disclaimer and dedication filed
Apr. 30, 2003, by the assignee, Kerr-McGee Chemical LLC.

   Hereby disclaims and dedicates to the Public, the remaining
term of said patent.

   5,150,084 - S. Hudson Owen, Marshfield, Wis.; Roger A. Baldwin,
Warr Acres, Okla.; Gerald E. Taylor; Paul A. Wolff, Oklahoma City,
Okla. METHOD FOR ADHESIVELY BONDING A RAIL-TIE FASTENING ASSEMBLY TO A
WOODEN RAILWAY TIE. Patent dated Nov. 3, 1992. Disclaimer and
dedication filed Apr. 30, 2003, by the assignee, Kerr-McGee Chemical
LLC.

   Hereby disclaims and dedicates to the Public, the remaining
term of said patent.

   5,165,599 - S. Hudson Owen, Marshfield, Wis.; Paul A. Wolff,
Oklahoma City, Okla. RAIL-TIE FASTENING SYSTEMS. Patent dated Nov. 3,
1992. Disclaimer and dedication filed Apr. 30, 2003, by the assignee,
Kerr-McGee Chemical LLC.

   Hereby disclaims and dedicates to the Public, the remaining
term of said patent.

   5,168,627 - S. Hudson Owen, Marshfield, Wis. RAILROAD TIE END
PLATE ATTACHMENT METHOD. Patent dated Dec. 8, 1992. Disclaimer and
dedication filed Apr. 30, 2003, by the assignee, Kerr-McGee Chemical
LLC.

   Hereby disclaims and dedicates to the Public, the remaining
term of said patent.

   5,288,016 - S. Hudson Owen, Marshfield, Wis. RAIL-TIE FASTENING
ASSEMBLY WITH ROCKING BEARING SENT. Patent dated Feb. 22, 1994.
Disclaimer and dedication filed Apr. 30, 2003, by the assignee,
Kerr-McGee Chemical LLC.

   Hereby disclaims and dedicates to the Public, the remaining
term of said patent.

   5,485,955 - S. Hudson Owen, Marshfield, Wis. RAIL-TIE FASTENING
ASSEMBLY FOR CONCRETE TIE. Patent dated Jan. 23, 1997. Disclaimer and
dedication filed Apr. 30, 2003, by the assignee, Kerr-McGee Chemical
LLC.

   Hereby disclaims and dedicates to the Public, the remaining
term of said patent.

   5,494,212 - S. Hudson Owen, Marshfield, Wis. RAIL-TIE FASTENING
METHOD FOR CONCRETE TIE. Patent dated Feb 27, 1996. Disclaimer and
dedication filed Apr. 30, 2003, by the assignee, Kerr-McGee Chemical
LLC.

   Hereby disclaims and dedicates to the Public, the remaining
term of said patent.