Patent Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 11/05/99

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

Re. 32,969       07/116,579        08/24/87        06/27/89       11/09/99
4,628,213        06/764,154        08/09/85        12/09/86       11/08/99
4,631,514        06/720,773        04/08/85        12/23/86       11/09/99
4,647,047        06/812,958        12/24/85        03/03/87       11/08/99
4,651,069        06/703,731        02/21/85        03/17/87       11/05/99
4,657,230        06/369,064        04/16/82        04/14/87       11/09/99
4,667,707        06/725,655        04/22/85        05/26/87       11/08/99
4,672,562        06/680,442        12/11/84        06/09/87       11/09/99
4,672,775        06/702,363        02/15/85        06/16/87       11/08/99
4,675,713        06/764,521        08/12/85        06/23/87       11/09/99
4,884,382        07/195,641        05/18/88        12/05/89       11/09/99
4,930,278        07/201,227        06/02/88        06/05/90       11/10/99
4,973,277        07/392,415        08/11/89        11/27/90       11/09/99
4,995,217        07/392,401        08/11/89        02/26/91       11/09/99
5,017,183        07/339,080        04/17/89        05/21/91       11/09/99
5,019,737        07/459,380        12/29/89        05/28/91       11/09/99
5,028,356        07/496,171        03/19/90        07/02/91       11/08/99
5,217,026        07/864,472        04/06/92        06/08/93       11/09/99
5,245,535        07/682,240        04/05/91        09/14/93       11/09/99
5,245,733        07/843,594        02/28/92        09/21/93       11/09/99
5,302,400        07/901,758        06/22/92        04/12/94       11/09/99
5,318,502        07/781,833        10/24/91        06/07/94       11/09/99
5,337,545        08/047,802        04/15/93        08/16/94       11/09/99
5,354,219        08/075,584        06/15/93        10/11/94       11/05/99
5,354,458        07/871,041        04/20/92        10/11/94       11/09/99
5,371,991        07/129,536        12/07/87        12/13/94       11/09/99
5,380,336        08/048,384        04/16/93        01/10/95       11/09/99
5,398,438        08/121,625        09/14/93        03/21/95       11/09/99
5,398,663        08/064,106        05/21/93        03/21/95       11/09/99
5,403,432        08/262,153        06/20/94        04/04/95       11/09/99
5,419,693        08/243,710        05/17/94        05/30/95       11/09/99
5,423,142        08/138,029        10/19/93        06/13/95       11/10/99
5,437,527        08/080,560        06/21/93        08/01/95       11/08/99
5,447,184        08/262,435        06/20/94        09/05/95       11/08/99