Patent Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 07/30/99

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,532,040        06/605,750        05/10/87        07/30/85       08/03/99
4,794,224        07/036,517        04/09/87        12/27/88       07/30/99
4,886,098        07/126,465        11/30/87        12/12/89       08/03/99
4,891,738        07/224,438        07/26/88        01/02/90       07/30/99
4,923,419        07/180,544        04/12/88        05/08/90       08/04/99
4,924,736        07/347,059        05/04/89        05/15/90       07/30/99
4,936,395        07/169,673        03/18/88        06/26/90       08/03/99
5,005,771        07/470,076        01/25/90        04/09/91       08/03/99
5,010,419        07/378,749        07/12/89        04/23/91       08/03/99
5,014,992        07/448,061        12/08/89        05/14/91       08/03/99
5,063,622        07/582,226        10/04/90        11/12/91       08/02/99
5,186,023        07/859,916        03/30/92        02/16/93       08/05/99
5,186,105        07/869,315        04/15/92        02/16/93       08/05/99
5,201,943        07/802,045        12/03/91        04/13/93       07/30/99
5,235,533        07/881,043        05/11/92        08/10/93       08/03/99
5,292,571        07/796,863        11/25/91        03/08/94       08/02/99
5,295,545        07/868,627        04/14/92        03/22/94       08/05/99
5,297,597        08/009,590        01/26/93        03/29/94       08/03/99
5,301,519        07/981,232        11/25/92        04/12/94       08/03/99
5,312,080        07/850,986        03/12/92        05/17/94       08/05/99
5,319,906        07/879,774        05/06/92        06/14/94       08/05/99
5,323,955        08/023,762        02/26/93        06/28/94       08/03/99
5,324,783        07/865,212        04/08/92        06/28/94       08/05/99
5,336,091        07/977,637        11/17/92        08/09/94       08/03/99
5,336,994        07/979,655        11/20/92        08/09/94       08/03/99
5,356,962        08/198,015        02/17/94        10/18/94       08/02/99
5,357,466        08/092,191        07/14/93        10/18/94       08/02/99
5,358,068        07/969,006        10/30/92        10/25/94       08/03/99
5,364,498        08/095,262        07/21/93        11/15/94       08/02/99
5,379,652        07/958,259        10/08/92        12/06/94       07/30/99
5,372,598        07/883,808        05/14/92        12/13/94       08/05/99
5,375,485        08/022,981        02/25/93        12/27/94       08/02/99
5,378,846        08/075,641        06/11/93        01/03/95       07/30/99
5,383,198        08/140,503        10/25/93        01/17/95       08/02/99
5,386,380        08/095,261        07/21/93        01/31/95       08/02/99
5,383,233        08/092,190        07/14/93        02/28/95       08/02/99
5,395,509        08/170,388        12/20/93        03/07/95       08/03/99
5,406,286        07/977,328        11/17/92        04/11/95       08/02/99
5,411,833        08/016,660        02/10/93        05/02/95       08/02/99
5,415,727        08/181,233        01/13/94        05/16/95       08/02/99
5,424,962        08/174,928        12/29/93        06/13/95       08/02/99