Patent Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 10/29/99

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,488,755        06/419,804        09/20/82        12/18/84       11/03/99
4,554,616        06/627,047        07/02/84        11/19/85       11/01/99
4,595,847        06/543,747        10/20/83        06/17/86       10/29/99
4,627,136        06/374,604        04/30/82        12/09/86       11/01/99
4,638,344        06/368,839        04/15/82        01/20/87       11/03/99
4,641,223        06/771,102        08/30/85        02/03/87       11/01/99
4,655,433        06/767,349        08/20/85        04/07/87       11/03/99
4,672,564        06/671,728        11/15/84        06/09/87       11/03/99
4,864,695        07/200,057        05/27/88        09/12/89       11/04/99
4,876,805        07/188,907        04/29/88        10/31/89       10/29/99
4,938,742        07/152,379        02/04/88        07/03/90       11/02/99
5,006,736        07/365,403        06/13/89        04/09/91       11/04/99
5,012,126        07/533,206        06/04/90        04/30/91       11/04/99
5,086,523        07/564,355        08/08/90        02/11/92       11/03/99
5,284,720        08/068,415        05/27/93        02/08/94       11/01/99
5,305,384        07/942,661        09/09/92        04/19/94       11/02/99
5,368,048        08/048,240        04/19/93        11/29/94       11/01/99
5,370,421        08/243,272        05/17/94        12/06/94       11/03/99
5,373,601        07/944,402        09/14/92        12/20/94       11/04/99
5,377,847        08/016,331        02/11/93        01/03/95       11/01/99
5,408,720        08/162,009        12/09/93        04/25/95       10/29/99
5,418,496        08/192,521        02/07/94        05/23/95       11/02/99
5,422,398        08/291,746        08/17/94        06/06/95       11/02/99
5,422,559        08/161,627        12/06/93        06/06/95       11/02/99
5,424,897        08/043,948        04/05/93        06/13/95       11/02/99
5,428,314        08/239,466        05/09/94        06/27/95       11/02/99
5,428,347        08/003,139        01/12/93        06/27/95       11/02/99
5,428,642        08/143,624        11/01/93        06/27/95       11/02/99
5,436,013        08/295,838        08/30/94        07/25/95       11/04/99
5,437,876        08/295,745        08/30/94        08/01/95       11/04/99