Patents Reinstated Due to the Acceptance of a
                       Late Maintenance Fee From 8/17/01

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,738,888       07/033,534      04/03/87        04/19/88        08/23/01
4,760,604       06/775,144      09/12/85        07/26/88        08/22/01
4,824,251       07/101,102      09/25/87        04/25/89        08/22/01
4,824,786       07/107,244      11/13/87        04/25/89        08/20/01
4,830,486       06/590,350      03/16/84        05/16/89        08/22/01
5,035,377       07/247,111      09/20/88        07/30/91        08/20/01
5,046,918       07/487,663      03/02/90        09/10/91        08/23/01
5,050,448       07/417,612      10/05/89        09/24/91        08/23/01
5,083,647       07/645,171      01/24/91        01/28/92        08/17/01
5,105,344       07/695,986      05/06/91        04/14/92        08/23/01
5,134,537       07/803,756      12/05/91        07/28/92        08/20/01
5,151,387       07/516,272      04/30/90        09/29/92        08/20/01
5,174,542       07/652,787      02/08/91        12/29/92        08/20/01
5,174,617       07/836,607      02/18/92        12/29/92        08/22/01
5,189,343       07/750,530      08/27/91        02/23/93        08/17/01
5,194,183       07/399,634      08/28/89        03/16/93        08/23/01
5,218,363       07/760,165      09/16/91        06/08/93        08/21/01
5,220,707       07/788,585      11/06/91        06/22/93        08/17/01
5,484,213       08/346,298      11/23/94        01/16/96        08/20/01
5,495,910       08/318,316      10/05/94        03/05/96        08/23/01
5,497,846       08/321,289      10/11/94        03/12/96        08/17/01
5,536,400       08/274,975      07/14/94        07/16/96        08/17/01
5,550,531       08/189,870      02/01/94        08/27/96        08/22/01
5,565,035       08/616,031      03/14/96        10/15/96        08/23/01
5,578,089       08/522,837      09/01/95        11/26/96        08/17/01
5,605,109       08/422,894      04/17/95        02/25/97        08/20/01
5,632,414       08/566,117      11/30/95        05/27/97        08/23/01
5,633,918       08/591,523      02/02/96        05/27/97        08/17/01
5,638,100       08/508,249      07/27/95        06/10/97        08/23/01
5,646,994       08/606,493      03/04/96        07/08/97        08/22/01