Patent Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 11/27/98

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,459,318        06/501,966        06/10/83        07/10/84       11/27/98
4,793,033        06/656,477        10/01/84        12/27/88       11/27/98
4,802,552        07/078,677        07/28/87        02/07/89       11/27/98
4,822,158        07/068,639        06/30/87        04/18/89       12/01/98
5,202,058        07/788,530        11/06/91        04/13/93       12/03/98
5,235,220        07/760,314        09/16/91        08/10/93       11/27/98
5,241,601        07/994,526        12/21/92        08/31/93       12/03/98
5,279,019        07/997,783        12/29/92        01/18/94       12/01/98
5,297,641        07/997,162        12/28/92        03/29/94       12/01/98
5,300,483        07/621,692        01/16/92        04/05/94       12/03/98
5,303,480        07/984,230        11/27/92        04/19/94       12/01/98
5,311,959        07/868,066        04/13/92        05/17/94       12/01/98
5,315,674        08/059,202        05/07/93        05/24/94       12/01/98
5,323,071        07/864,256        04/06/92        06/21/94       12/01/98
5,328,230        08/022,046        02/24/93        07/12/94       12/01/98
5,330,323        07/988,054        01/19/93        07/19/94       12/01/98
5,330,496        07/695,724        05/06/91        07/19/94       11/27/98
5,332,041        07/998,276        12/30/92        07/26/94       12/03/98
5,335,691        08/046,668        04/13/93        08/09/94       12/03/98