Disclaimers

   5,201,315 - James M. Griffith, Newport Beach, Calif. ULTRASOUND
IMAGING SHEATH. Patent dated April 13, 1993. Disclaimer filed May 3,
1999, by the assignee, Boston Scientific Corporation.

   Hereby enters this disclaimer to all claims of said patent.

   5,219,335 - Lloyd Willard, Miltona; Wayne Sieben, Alexandria, both of
Minn. INTRAVASCULAR DEVICE SUCH AS INTRODUCER SHEATH OR BALLOON CATHETER
OR THE LIKE AND METHODS FOR USE THEREOF. Patent dated June 15, 1993.
Disclaimer filed May 3, 1999, by the assignee, Scimed Life Systems, Inc.

   Hereby enters this disclaimer to claims 1-5, 7, 8, 10, 11, 18-22, 24-27
and 29 of said patent.

   5,249,580 - James M. Griffith, Newport Beach, Calif. METHOD FOR
ULTRASOUND IMAGING. Patent dated October 5, 1993. Disclaimer filed May
3, 1999, by the assignee, Boston Scientific Corporation.

   Hereby enters this disclaimer to all claims of said patent.

   5,327,885 - James M. Griffith, Phoenix, Ariz. COMBINATION CATHETER FOR
INVASIVE PROBE DELIVERY AND BALLOON DILATION. Patent dated July 12,
1994. Disclaimer filed May 3, 1999, by the assignee, Boston Scientific
Corporation.

   Hereby enters this disclaimer to claims 1-5 and 13-19 of said patent.

   5,400,789 - James M. Griffith, Phoenix, Ariz. SHEATH FOR GUIDE WIRE
PROBE. Patent dated March 28, 1995. Disclaimer filed May 3, 1999, by the
assignee, Boston Scientific Corporation.

   Hereby enters this disclaimer to all claims of said patent.

   5,543,018 - John K. Stevens; Alexandre M. Ismailov, both of Toronto,
Canada. METHOD AND APPARATUS FOR AUTOMATED ELECTROPHORESIS USING LIGHT
POLARIZATION DETECTOR. Patent dated Aug. 6, 1996. Disclaimer filed Apr.
21, 1999, by the assignee, Visible Genetics Inc.

   Hereby enters this disclaimer to claims 1-11, 16-23, 28, 33, 34, 38-40,
and 42.

   5,597,656 - Jay F. Carey, II, Follansbee, W. Va; Mehrooz Zamanzadeh,
Pittsburgh, Pa. COATED METAL STRIP. Patent dated Jan. 28, 1997.
Disclaimer filed Oct. 26, 1998, by the assignee, The Louis Berkman
Company.

   The term of this patent shall not extend beyond the expiration date of
Pat. Nos. 5,491,036; 5,491,035; 5,489,490; 5,429,882; 5,401,586;
5,397,652; and 5,314,758.

   5,702,346 - Richard J. Lazzara, Lake Worth, Fla.; Keith D. Beaty, West
Palm Beach, Fla. DENTAL IMPLANT FIXTURE FOR ANCHORAGE IN CORTICAL BONE.
Patent dated Dec. 30, 1997. Disclaimer filed March 22, 1999, by the
assignee, Implant Innovations, Inc.

   Hereby enters this disclaimer to claims 1-150 of said patent.

   5,724,861 - Josef Mang, Lake Villa, Ill. CAM FOLLOWER MOUNTING ASSEMBLY
AND METHOD. Patent dated March 10, 1998. Disclaimer filed October 21,
1998, by the assignee, Emerson Electric Company.

   Hereby enters this disclaimer to claims 1, 2, 3 and 4 of said patent.

   5,742,591 - Nageen Himayat, Huntingdon Valley; Charles A. Eldering,
Doylestown, both of Pa. INTERFERENCE CANCELLATION SYSTEM FOR CATV RETURN
TRANSMISSIONS. Patent dated April 21, 1998. Disclaimer filed April 30,
1999, by the assignee, General Instrument Corporation.

   Hereby enters this disclaimer to claim 42, of said patent.


                           Disclaimer and Dedication

   5,483,863 - Yuri A. Dreizin, Minneapolis, Minn. ELECTROMAGNETIC
LAUNCHER WITH ADVANCED RAIL AND BARREL DESIGN. Patent dated Jan. 16,
1996. Disclaimer and Dedication filed Apr. 19, 1999, by the assignee,
Dyuar Incorporated.

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