Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 06/22/01

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,656,099       06/513,224      09/06/83        04/07/87        06/26/01
4,729,494       06/848,688      04/04/86        03/08/88        06/28/01
4,782,524       07/047,079      05/05/87        11/01/88        06/22/01
4,793,077       06/942,898      12/17/86        12/27/88        06/22/01
4,825,738       07/160,865      02/26/88        05/02/89        06/25/01
4,864,137       07/166,765      03/03/88        09/05/89        06/25/01
4,868,833       07/083,342      08/10/87        09/19/89        06/28/01
4,876,602       07/189,073      05/02/88        10/24/89        06/25/01
4,898,711       07/223,982      07/25/88        02/06/90        06/28/01
5,024,485       07/548,267      07/05/90        06/18/91        06/28/01
5,035,543       07/377,374      07/10/89        07/30/91        06/28/01
5,121,908       07/597,053      10/15/90        06/16/92        06/25/01
5,121,959       07/652,292      02/05/91        06/16/92        06/25/01
5,142,794       07/583,036      09/14/90        09/01/92        06/25/01
5,155,464       07/543,932      06/26/90        10/13/92        06/22/01
5,177,675       07/778,311      10/16/91        01/05/93        06/28/01
5,179,283       07/390,058      08/07/89        01/12/93        06/25/01
5,185,728       07/908,757      07/06/92        02/09/93        06/22/01
5,190,651       07/720,263      06/24/91        03/02/93        06/22/01
5,197,953       07/727,013      07/08/91        03/30/93        06/28/01
5,324,446       07/759,251      09/13/91        06/28/94        06/25/01
5,452,348       08/016,623      02/12/93        09/19/95        06/26/01
5,469,504       08/337,572      11/10/94        11/21/95        06/25/01
5,481,146       08/120,003      09/10/93        01/02/96        06/28/01
5,481,804       08/322,682      10/12/94        01/09/96        06/25/01
5,482,742       08/096,476      07/22/93        01/09/96        06/28/01
5,500,891       08/316,695      09/30/94        03/19/96        06/25/01
5,546,454       08/215,839      03/21/94        08/13/96        06/25/01
5,559,794       08/118,866      09/09/93        09/24/96        06/25/01
5,563,126       07/999,499      12/29/92        10/08/96        06/25/01
5,592,147       08/077,488      06/14/93        01/07/97        06/22/01
5,593,336       08/406,685      03/20/95        01/14/97        06/25/01
5,597,453       07/962,256      10/16/92        01/28/97        06/25/01
5,607,107       08/120,247      09/13/93        03/04/97        06/22/01
5,611,732       08/512,137      08/07/95        03/18/97        06/25/01
5,626,328       08/346,768      11/30/94        05/06/97        06/25/01
5,627,850       08/407,446      03/20/95        05/06/97        06/25/01
5,630,389       08/537,267      09/29/95        05/20/97        06/26/01
5,637,818       08/369,550      01/06/95        06/10/97        06/25/01
5,669,010       08/608,993      03/06/96        09/16/97        06/27/01