Disclaimers

   D. 335,722 -- Michael J. Gray, Duxbury MA. RAZOR HANDLE. Patent Dated
May 18, 1993. Disclaimer filed February 14, 2000, by the assignee, The
Gillette Co..

   The term of the patent shall not extend beyond the expiration date of
Pat. No. D. 325,689.

   D. 393,902 -- Mark Pickett, Rancho Palos Verdes, CA. COMBINED CEILING
FAN AND LIGHT FIXTURE. Patent dated April 28, 1998. Disclaimer filed
February 23, 2000, by the assignee, Minka Lighting Inc.

   Hereby enters this disclaimer to all claims of said patent.

   5,513,943 -- Larry Lugash; Karapet Ablabutyan, both of Los Angeles;
Samson Mkrtchyan, Burbank, all of CA. LOAD ELEVATOR WITH COLUMNAR POWER
ASSEMBLIES. Patent dated May 7, 1996. Disclaimer filed February 28,
2000, by the assignee, Maxon Industries, Inc..

   Hereby enters this disclaimer to all claim 19 of said patent.

   5,577,662 -- Thomas A. Hogue, Ennis, TX; William K. Hull, Long Beach,
CA. EMBEDDED RAILWAY TRACK SYSTEM. Patent dated November 26, 1996.
Disclaimer filed November 29, 1999, by the assignee, RFR Industries, Inc.

   Hereby enters this disclaimer to claims 7, 8, 9, 20, 21, 22, and 23 of
said patent.

   5,836,720 -- John C. Stankus, Canonsburg; John G. Oldsen, Butler, both
of PA; Brian R. Castle, Rolla, MO. MINE ROOF SUPPORT SYSTEM. Patent
dated November 17, 1998. Disclaimer filed January 24, 2000, by the
assignee, Jenmar Corp.

   Hereby enters this disclaimer to claim 2 of said patent.

   5,868,740 -- Robert F. LeVeen; Randy Fox, both of Omaha, NE. METHOD FOR
VOLUMETRIC TISSUE ABLATION. Patent dated February 9, 1999. Disclaimer
filed February 16, 2000, by the assignee, Board of Regents-Univ. Of
Nebraska.

   The term of patent shall not extend beyond the expiration date of Pat.
No. 5,855,576.

   5,955,016 -- David Goldfarb, Paradise Valley, AZ. METHOD OF FORMING A
VASCULAR PROSTHETIC STRUCTURE INCLUDING EXPANDED PTFE AND GRAPHITE.
Patent dated September 21, 1999. Disclaimer filed January 11, 2000, by
the inventor.

   The term of this patent shall not extend beyond the expiration date of
Pat. No. 5,919,223.

   5,967,703 -- John C. Stankus, Canonsburg; John G. Oldsen, Butler, both
of PA; Brian R. Castle, Rolla, MO. MINE ROOF SUPPORT SYSTEM. Patent
dated October 19, 1999. Disclaimer filed January 24, 2000, by the
assignee, Jenmar Corp.

   Hereby enters this disclaimer to claims 1-3, 6-8, 10, 12, 18-20, and
22-24 of said patent.

                           Disclaimer and Dedication

   6,010,048 -- Joseph J. Settelmayer, Eureka, CA. ROOF RACK WITH QUICK
RELEASE TOWER ASSEMBLY. Patent dated January 4, 2000. Disclaimer and
Dedication filed March 2, 2000, by the assignee, Yakima Products.

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

                                  Dedication

   5,204,062 -- Steven T. Buglino, Apex; Pareshbhai J. Patel, Cary; Bahram
B. Rahimzadeh, Durham, all of NC. BOWIE-DICK TEST DEVICE. Patent dated
April 20, 1993. Dedication filed February 14, 2000, by the assignee,
Steris, Inc.

   Hereby dedicates to the public the entire term of said patent.