Patents Reinstated Due to the Acceptance of a Late Maintenance Fee From 10/31/97 Patent Serial Filing Date Issue Granted Number Number Date Date Date 5,059,071 07/510,864 04/17/90 10/22/91 11/04/97 5,138,566 07/590,764 10/01/90 08/11/92 11/04/97 5,221,627 07/689,750 05/24/91 06/22/93 11/04/97 Patents Reinstated Due to the Acceptance of a Late Maintenance Fee From 11/07/97 Patent Serial Filing Date Issue Granted Number Number Date Date Date 4,469,739 06/516,517 07/26/83 09/04/84 11/07/97 4,501,347 06/511,353 07/06/83 02/26/85 11/07/97 4,529,246 06/248,852 03/30/81 07/16/85 11/07/97 4,804,377 07/082,084 08/05/87 02/14/89 11/10/97 5,217,999 07/856,849 03/24/92 06/08/93 11/07/97