Patent Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 05/28/99

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,506,687        06/386,898        06/10/82        03/26/85       06/03/99
4,515,153        06/520,083        08/04/83        05/07/85       06/03/99
4,565,200        06/374,806        05/04/82        01/21/86       05/28/99
4,592,339        06/743,951        06/12/85        06/03/86       06/03/99
4,610,878        06/504,986        06/16/83        09/09/86       06/01/99
4,901,869        07/236,742        08/26/88        02/20/90       06/03/99
4,903,445        07/294,400        01/09/89        02/27/90       06/03/99
4,918,887        07/109,471        10/14/87        04/24/90       06/01/99
4,924,564        07/384,783        07/25/89        05/15/90       06/01/99
4,967,933        07/316,425        02/27/89        11/06/90       06/03/99
4,971,732        07/244,598        09/13/88        11/20/90       06/03/99
4,972,171        07/379,092        07/13/89        11/20/90       06/01/99
4,993,706        07/450,172        12/13/89        02/19/91       06/03/99
4,994,159        07/468,560        01/23/90        02/19/91       06/03/99
5,000,938        07/376,581        07/07/89        03/19/91       06/01/99
5,025,346        07/312,642        02/17/89        06/18/91       06/01/99
5,168,583        07/377,850        06/28/89        12/08/92       06/01/99
5,193,370        07/860,096        03/30/92        03/16/93       06/03/99
5,193,569        07/860,441        03/30/92        03/16/93       06/03/99
5,211,520        07/907,822        07/02/92        05/18/93       06/01/99
5,236,724        07/816,010        12/31/91        08/17/93       06/02/99
5,252,942        07/817,759        01/08/92        10/12/93       05/28/99
5,262,875        07/876,363        04/30/92        11/16/93       06/03/99
5,312,478        07/508,117        04/11/90        05/17/94       06/03/99
5,325,166        08/080,031        06/18/93        06/28/94       06/03/99
5,328,427        08/151,861        11/15/93        07/12/94       06/01/99
5,332,203        08/028,898        03/08/93        07/26/94       06/01/99
5,333,353        07/964,774        10/22/92        08/02/94       06/01/99
5,349,072        08/085,805        07/06/93        09/20/94       06/03/99
5,352,342        08/034,783        03/19/93        10/04/94       06/03/99
5,355,325        07/903,390        06/24/92        10/11/94       06/03/99
5,369,815        08/135,781        10/12/93        12/06/94       06/01/99
5,377,396        08/026,603        03/05/93        01/03/95       06/01/99
5,379,109        07/899,977        06/17/92        01/03/95       06/01/99
5,379,517        07/747,841        11/09/90        01/10/95       06/01/99
5,380,249        07/943,338        09/10/92        01/10/95       06/01/99
5,384,009        08/078,131        06/16/93        01/24/95       06/03/99
5,386,772        08/077,289        06/15/93        02/07/95       06/01/99
5,388,616        08/278,184        07/21/94        02/14/95       06/03/99