Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 07/11/00

Patent           Serial            Filing          Issue           Granted
Number           Number            Date            Date            Date

4,582,966        06/555,559        11/28/83        04/15/86        06/02/00
4,627,050        06/613,026        05/22/84        12/02/86        06/05/00
4,635,885        06/614,202        05/25/84        01/13/87        06/07/00
4,688,006        06/782,677        10/02/85        08/18/87        06/06/00
4,709,365        06/755,328        06/28/85        11/24/87        06/07/00
4,721,515        06/932,121        11/19/86        01/26/88        06/08/00
4,915,101        07/125,973        11/27/87        04/10/90        06/06/00
4,976,905        07/430,572        11/01/89        12/11/90        06/07/00
4,993,187        07/421,344        10/13/89        02/19/91        06/07/00
5,019,429        07/392,451        08/11/89        05/28/91        06/07/00
5,020,090        07/434,934        11/13/89        05/28/91        06/07/00
5,048,224        07/522,265        05/11/90        09/17/91        06/06/00
5,048,898        07/549,979        07/06/90        09/17/91        06/08/00
5,057,932        07/347,629        05/05/89        10/15/91        06/07/00
5,071,020        07/438,350        11/16/89        12/10/91        06/05/00
5,077,474        07/447,135        12/08/89        12/31/91        06/07/00
5,080,455        07/657,616        02/20/91        01/14/92        06/08/00
5,081,659        07/403,352        09/06/89        01/14/92        06/07/00
5,083,274        07/486,137        02/28/90        01/21/92        06/08/00
5,083,586        07/696,420        05/06/91        01/28/92        06/06/00
5,085,243        07/708,118        05/29/91        02/04/92        06/06/00
5,086,641        07/516,603        04/30/90        02/11/92        06/06/00
5,087,491        07/479,004        02/09/90        02/11/92        06/07/00
5,088,173        07/536,936        06/12/90        02/18/92        06/05/00
5,102,391        07/479,349        02/13/90        04/07/92        06/08/00
5,310,688        08/035,549        03/23/93        05/10/94        06/08/00
5,327,478        07/897,700        06/12/92        07/05/94        06/07/00
5,331,547        08/011,309        01/29/93        07/19/94        06/08/00
5,333,747        08/067,360        05/24/93        08/02/94        06/06/00
5,334,137        07/839,417        02/21/92        08/02/94        06/06/00
5,337,420        07/970,618        11/03/92        08/16/94        06/02/00
5,340,054        07/839,721        02/14/92        08/23/94        06/07/00
5,364,593        08/096,303        07/26/93        11/15/94        06/07/00
5,388,804        08/095,390        07/19/93        02/14/95        06/07/00
5,409,673        07/832,989        02/10/92        04/25/95        06/06/00
5,416,777        08/029,620        03/11/93        05/16/95        06/08/00
5,420,171        07/815,427        12/31/91        05/30/95        06/06/00
5,427,425        08/286,206        08/05/94        06/27/95        06/06/00
5,427,693        08/049,488        04/19/93        06/27/95        06/06/00
5,433,326        08/197,508        02/16/94        07/18/95        06/07/00
5,438,940        08/097,648        07/26/93        08/08/95        06/07/00
5,451,302        08/237,480        05/03/94        09/19/95        06/07/00
5,459,071        08/235,970        05/02/94        10/17/95        06/07/00
5,475,961        08/080,160        06/21/93        12/19/95        06/06/00
5,476,481        08/240,644        06/20/94        12/19/95        06/07/00
5,481,953        08/275,278        07/15/94        01/09/96        06/05/00
5,488,563        08/041,870        04/02/93        01/30/96        06/05/00
5,494,096        08/225,644        04/11/94        02/27/96        06/07/00
5,494,445        08/331,810        10/31/94        02/27/96        06/06/00
5,496,976        08/413,692        03/30/95        03/05/96        06/07/00
5,509,499        08/297,245        08/25/94        04/23/96        06/06/00