Patent Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 12/04/98

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,523,384        06/592,250        03/22/84        06/18/85       12/07/98
4,763,660        07/024,919        03/13/87        08/16/88       12/07/98
4,843,463        07/197,673        05/23/88        06/27/89       12/10/98
4,935,586        07/389,422        08/03/89        06/19/90       12/07/98
4,944,233        07/364,872        06/12/89        07/31/90       12/07/98
4,945,740        07/282,059        12/09/88        08/07/90       12/07/98
5,133,374        07/678,800        04/01/91        07/28/92       12/07/98
5,239,201        07/982,003        11/24/92        08/24/93       12/07/98
5,259,554        07/883,543        05/15/92        11/09/93       12/07/98
5,296,659        08/005,584        01/19/93        03/22/94       12/07/98
5,309,583        08/074,395        06/10/93        05/10/94       12/07/98
5,318,786        08/116,060        09/02/93        06/07/94       12/07/98
5,328,365        08/045,397        04/09/93        07/12/94       12/07/98
5,330,000        07/949,463        09/22/92        07/19/94       12/07/98
5,333,600        08/153,027        11/17/93        08/02/94       12/07/98
5,343,944        07/942,897        09/10/92        09/06/94       12/10/98