Disclaimers and Dedications

   4,641,514 - John J. Rozmus, Berwyn, Pa. TOOLING FOR MANUFACTURE OF
ELECTRICAL CONTACTS. Patent dated February 10, 1987. Disclaimer and
Dedication filed December 29, 1998, by the assignee, Micro-Fab
Corporation.

   Hereby enters this disclaimer and dedication to the remaining term of
said patent.

   4,706,081 - John H. Hart, Campbell; Frederick J. Baker, Santa Clara,
both of Calif. METHOD AND APPARATUS FOR BRIDGING LOCAL AREA NETWORKS.
Patent dated Nov. 10, 1987. Disclaimer and Dedication filed Dec. 24,
1997, by the assignee, Vitalink Communications Corporation.

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


                                  Disclaimers

   4,922,406 - Bernhard Schuh, Baindt, Fed. Rep. of Germany. LABYRINTH SEAL
IN DISK STORAGE DRIVE. Patent dated May 1, 1990. Disclaimer filed March
26, 1998, by the assignee, Papst Licensing GmbH & Co. KG.

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

   5,507,117 - Jeffrey M. Kalman, Cleveland Heights; John R. Nottingham,
Hunting Valley; Jeffrey S. Plantz, Seven Hills; Paul A. Tamulewicz,
Parma, all of Ohio. TREE STAND. Patent dated April 16, 1996. Disclaimer
filed April 16, 1996, by the assignee, County Line Limited, L.L.C.

   Hereby enters this disclaimer to claim 8 of said patent.

   5,549,605 - Kevin F. Hahnen, Cooper City, Fla. ROLLER ELECTRODES FOR
ELECTROCAUTERY PROBES FOR USE WITH A RESECTOSCOPE. Patent dated August
27, 1996. Disclaimer filed January 19, 1999, by the assignee, Symbiosis
Corporation.

   Hereby enters this disclaimer to claims 1-4 of said patent.

   5,554,103 - Zhensheng Zheng; Zhili Huang, both of Guangzhou; Ziqiang
Huang, Xiantan; Shifang Yang, Guangzhou, all of China. HIGH EFFICIENCY
EXTERNAL COUNTER-PULSATION APPARATUS AND METHOD FOR CONTROLLING SAME.
Patent dated September 10, 1996. Disclaimer filed December 17, 1998, by
the assignee, Vasomedical, Inc.

   Hereby enters this disclaimer to claims 8-11, 20-23 and 36-38 of said
patent.

   5,590,981 - Keith J. Osborne, Glenn Ellyn, Ill. DOUBLE-CONTAINMENT
UNDERGROUND PIPING SYSTEM. Patent dated January 7, 1997. Disclaimer
filed July 29, 1998, by the assignee Pisces By OPW, Inc.

   The term of this patent shall not extend beyond the expiration date of
Pat. No. 5,553,971.

   5,673,082 - Dennis L. Wells, Friendswood; Larry C. Li, Sugarland; Brian
J. Cox, Seabrook, all of Texas. LIGHT-DIRECTED RANGING SYSTEM
IMPLEMENTING SINGLE CAMERA SYSTEM FOR TELEROBOTICS APPLICATIONS. Patent
dated Sept. 30, 1997. Disclaimer filed Sept. 28, 1998, by the assignee,
The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration.

   Hereby enters this disclaimer to claims 1, 2, 8, 9, 10, 11 13, 14, 15,
16 of said patent.

   5,815,613 - Mohammad T. Fatehi, Middletown; Wayne Harvey Knox, Rumson,
both of N.J. OPTICAL SWITCHED DISTRIBUTOR. Patent dated Sept. 29, 1998.
Disclaimer filed November 16, 1998, by the assignee, Lucent
Technologies, Inc.

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