Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 07/28/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

RE 36,031        08/529,514        09/18/95        01/05/99       08/03/00
4,661,691        06/548,013        11/01/83        04/28/87       08/02/00
4,684,941        06/684,999        12/21/84        08/04/87       07/28/00
4,732,395        07/061,120        06/10/87        03/22/88       08/01/00
4,754,897        07/013,573        02/11/87        07/05/88       08/02/00
4,943,052        07/302,819        01/27/89        07/24/90       08/03/00
4,952,408        07/197,648        05/23/88        08/28/90       08/01/00
4,966,134        07/346,372        04/28/89        10/30/90       08/01/00
4,970,367        07/473,882        02/02/90        11/13/90       08/01/00
5,003,822        07/416,144        10/02/89        04/02/91       07/28/00
5,006,195        07/407,488        09/14/89        04/09/91       08/02/00
5,014,592        07/459,905        01/02/90        05/14/91       08/03/00
5,036,714        07/421,875        10/16/89        08/06/91       08/01/00
5,068,669        07/239,284        09/01/88        11/26/91       08/02/00
5,074,069        07/674,586        03/25/91        12/24/91       08/02/00
5,099,819        07/416,037        10/02/89        03/31/92       07/31/00
5,123,768        07/740,916        08/06/91        06/23/92       07/31/00
5,293,446        07/705,746        05/28/91        03/08/94       08/03/00
5,322,138        08/045,444        04/08/93        06/21/94       07/31/00
5,324,300        07/782,663        10/25/91        06/28/94       08/01/00
5,340,080        08/013,014        02/02/93        08/23/94       07/31/00
5,372,191        07/949,838        11/13/92        12/13/94       08/02/00
5,412,892        08/118,400        09/09/93        05/09/95       08/03/00
5,413,166        08/060,205        05/07/93        05/09/95       08/01/00
5,416,317        08/188,790        01/31/94        05/16/95       08/01/00
5,417,431        08/147,139        11/03/93        05/23/95       07/28/00
5,420,049        08/118,901        09/09/93        05/30/95       08/03/00
5,435,557        08/295,010        08/23/94        07/25/95       08/01/00
5,444,105        08/100,333        07/30/93        08/22/95       07/28/00
5,446,279        08/113,537        08/27/93        08/29/95       08/02/00
5,448,593        07/920,110        07/24/92        09/05/95       08/03/99
5,458,294        08/222,488        04/04/94        10/17/95       08/02/00
5,467,800        08/337,137        11/10/94        11/21/95       08/03/00
5,468,989        07/963,926        10/20/92        11/21/95       08/01/00
5,474,200        08/239,318        05/06/94        12/12/95       08/03/00
5,503,183        08/478,896        06/07/95        04/02/96       08/03/00
5,504,913        07/883,314        05/14/92        04/02/96       07/31/00
5,504,942        08/176,076        12/30/93        04/09/96       08/02/00
5,505,229        08/090,500        07/12/93        04/09/96       08/03/00
5,511,117        08/312,347        09/26/94        04/23/96       08/03/00
5,511,535        08/196,275        02/14/94        04/30/96       08/02/00
5,513,930        08/129,137        12/03/93        05/07/96       08/01/00
5,515,145        08/158,396        11/29/93        05/07/96       08/02/00
5,518,098        08/353,229        12/01/94        05/21/96       08/03/00
5,518,379        08/456,790        06/01/95        05/21/96       07/31/00
5,520,133        08/422,898        04/17/95        05/28/96       08/01/00