Patent Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 06/18/99

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,569,647        06/533,192        09/16/83        02/11/86       06/21/99
4,660,733        06/626,464        06/29/84        04/28/87       06/21/99
4,940,081        07/386,947        07/31/89        07/10/90       06/21/99
4,951,439        07/294,747        01/09/89        08/28/90       06/23/99
4,965,727        06/649,995        09/13/84        10/23/90       06/21/99
4,993,512        07/242,413        09/09/88        02/19/91       06/21/99
5,005,599        07/522,685        05/14/90        04/09/91       06/21/99
5,164,535        07/755,634        09/05/91        11/17/92       06/22/99
5,205,762        07/803,424        12/06/91        04/27/93       06/18/99
5,211,273        07/906,752        06/30/92        05/18/93       06/18/99
5,260,889        07/861,077        03/31/92        11/09/93       06/21/99
5,291,879        07/918,372        07/23/92        03/08/94       06/18/99
5,305,771        08/049,134        04/19/93        04/26/94       06/24/99
5,306,975        07/946,422        11/06/92        04/26/94       06/21/99
5,307,759        07/895,879        06/09/92        05/03/94       06/21/99
5,314,080        07/997,241        12/28/92        05/24/94       06/18/99
5,325,699        08/019,053        02/18/93        07/05/94       06/18/99
5,331,589        07/968,772        10/30/92        07/19/94       06/21/99
5,335,333        07/784,566        10/29/91        08/02/94       06/18/99
5,337,989        07/844,198        03/02/93        08/16/94       06/22/99
5,345,576        07/816,603        12/31/91        09/06/94       06/22/99
5,351,241        07/996,699        12/24/92        09/27/94       06/22/99
5,357,436        07/964,319        10/21/92        10/18/94       06/18/99
5,360,409        08/032,678        03/17/93        11/01/94       06/24/99
5,398,806        07/947,429        09/18/92        03/21/95       06/21/99
5,405,169        08/100,695        07/30/93        04/11/95       06/21/99
5,416,114        08/094,769        07/20/93        05/16/95       06/21/99