Disclaimers

   4,813,187--Heinrich Mushardt, Neu-Bornsen, Fed. Rep. of Germany.
METHODS OF GRINDING ARCUATE SURFACES OF WORKPIECES. Patent dated March
21, 1989. Disclaimer filed July 14, 1997, by the assignee, Korber AG.

Hereby enters this disclaimer to claims 1-5 of said patent.

   5,318,954--Heinz Mueller, Monheim; Claus-Peter Herold, Mettmann; Stephan
von Tapavicza, Erkrath; Michael Neuss, Cologne; Frank Burbach,
Meersbusch, all of Fed. Rep. of Germany. USE OF SELECTED ESTER OILS OF
LOW CARBOXYLIC ACIDS IN DRILLING FLUIDS.  Patent dated June 7, 1994.
Disclaimer filed July 17, 1997, by the assignee, Baroid Limited.

   The term of this patent shall not extend beyond the expiration date of
Patent No. 5,254,531 and 5,403,822.

   5,318,956--Heinz Mueller, Monheim; Claus-Peter Herold, Mettmann; Stephan
von Tapavicza, Erkrath; Johann Friedrich Fues, Grevenbroich, all of Fed.
Rep. of Germany. USE OF SELECTED ESTER OILS IN WATER-BASED DRILLING
FLUIDS OF THE O/W EMULSION TYPE AND CORRESPONDING DRILLING FLUIDS WITH
IMPROVED ECOLOGICAL ACCEPTABILITY.  Patent dated June 7, 1994.
Disclaimer filed July 17, 1997, by the assignee, Baroid Limited.

   The term of this patent shall not extend beyond the expiration date of
Patent No. 5,194,422.

   5,348,938--Heinz Mueller, Monheim; Claus-Peter Herold, Mettmann; Stephan
von Tapavicza, Erkrath, all of Fed. Rep. of Germany. OLEOPHILIC ALCOHOLS
AS A CONSTITUENT OF INVERT DRILLING FLUIDS.  Patent dated September 20,
1994. Disclaimer filed July 17, 1997, by the assignee, Baroid Limited.

   The term of this patent shall not extend beyond the expiration date of
Patent No. 5,194,422.

   5,402,256--Ronald A. Spanke, Wheaton, Ill. OPTICAL TIME SLOT
INTERCHANGER APPARATUS AND METHOD OF OPERATION.  Patent dated March 28,
1995. Disclaimer filed August 12, 1997, by the assignee, Lucent
Technologies Inc.

   Hereby enters this disclaimer to claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11 and 12 of said patent.

   5,571,898--Ulrike Schloessner, Ludwigshafen; Udo Mayer, Frankenthal,
both of Germany. BASIC DYES BASED ON AMIDES OF J-ACID
(1-HYDROXY-6-AMINONAPHTHALENE-3-SULFONIC ACID) AND AMIDES OF J-ACID.
Patent dated November 5, 1996. Disclaimer filed September 9, 1997, by
the assignee, BASF Aktiengesellschaft.

   Hereby enters this disclaimer to the entire term of said patent.

   5,634,550--Peter J. Ensch, Wauwatosa; Paul J. Marks, Milwaukee; Thomas
Motaine, Thiensville; Timothy J. Schladweiler, West Bend, all of Wis.
DIRECTION CHANGING MECHANISM FOR TRANSFERRING ARTICLES BETWEEN
TRANSVERSE CONVEYORS. Patent dated June 3, 1997. Disclaimer filed August
11, 1997, by the assignee, Rexnord Corporation.

   Hereby enters this disclaimer to claim 21 of said patent.