Patents Reinstated Due to the Acceptance of a
                       Late Maintenance Fee From 9/14/01

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,704,585       06/894,404      08/08/86        11/03/87        09/20/01
4,705,343       06/855,039      04/23/86        11/10/87        09/20/01
4,705,400       06/806,893      12/09/85        11/10/87        09/18/01
4,711,998       06/804,720      12/05/85        12/08/87        09/20/01
4,803,805       07/077,192      07/24/87        02/14/89        09/17/01
4,820,732       06/848,233      04/04/86        04/11/89        09/20/01
4,824,055       07/009,731      02/02/87        04/25/89        09/19/01
4,827,851       07/181,722      04/14/88        05/09/89        09/20/01
4,837,797       07/148,100      01/27/88        06/06/89        09/20/01
4,845,481       06/922,847      10/24/86        07/04/89        09/19/01
4,847,083       07/019,768      02/27/87        07/11/89        09/19/01
4,856,543       07/247,534      09/22/88        08/15/89        09/14/01
4,862,186       06/929,566      11/12/86        08/29/89        09/18/01
4,871,220       07/206,793      06/15/88        10/03/89        09/20/01
5,095,286       07/436,609      11/15/89        03/10/92        09/18/01
5,176,116       07/812,691      12/23/91        01/05/93        09/19/01
5,184,598       07/730,192      07/15/91        02/09/93        09/20/01
5,194,803       07/594,273      10/09/90        03/16/93        09/14/01
5,221,362       07/749,163      08/23/91        06/22/93        09/19/01
5,223,253       07/411,921      09/28/89        06/29/93        09/20/01
5,234,058       07/803,945      12/09/91        08/10/93        09/20/01
5,461,873       08/126,068      09/23/93        10/31/95        09/19/01
5,595,416       08/510,666      08/03/95        01/21/97        09/19/01
5,621,338       08/584,105      01/11/96        04/15/97        09/17/01
5,652,066       08/467,766      06/06/95        07/29/97        09/19/01