Patents Reinstated Due to the Acceptance of a
                       Late Maintenance Fee From 3/02/01

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,761,968       07/108,105      10/13/87        08/09/88        03/08/01
4,775,443       06/826,596      02/06/86        10/04/88        03/08/01
4,781,182       06/915,122      10/03/86        11/01/88        03/08/01
4,995,874       07/370,718      06/23/89        02/26/91        03/08/01
5,010,951       07/389,238      08/03/89        04/30/91        03/07/01
5,020,522       07/490,465      03/08/90        06/04/91        03/02/01
5,035,494       07/487,408      03/01/90        07/30/91        03/07/01
5,048,535       07/536,829      06/12/90        09/17/91        03/07/01
5,056,985       07/447,744      12/08/89        10/15/91        03/02/01
5,099,124       07/557,625      07/24/90        03/24/92        03/07/01
5,152,547       07/608,235      11/02/90        10/06/92        03/05/01
5,393,017       08/008,036      01/25/93        02/28/95        03/05/01
5,420,720       08/011,323      01/29/93        05/30/95        03/02/01
5,446,581       08/227,086      04/13/94        08/29/95        03/05/01
5,467,620       08/224,162      04/07/94        11/21/95        03/08/01
5,499,305       08/220,280      03/30/94        03/12/96        03/07/01
5,553,399       08/337,963      11/14/94        09/10/96        03/08/01
5,571,170       08/199,119      02/22/94        11/05/96        03/02/01
5,581,485       08/353,035      12/08/94        12/03/96        03/02/01
5,592,726       08/369,794      01/06/95        01/14/97        03/05/01