Patents Reinstated Due to the Acceptance of a Late Maintenance Fee From 04/17/98 Patent Serial Filing Issue Granted Number Number Date Date Date 4,430,739 06/304,232 09/21/81 02/07/84 04/22/98 4,502,665 06/644,662 08/27/84 03/05/85 04/23/98 4,813,520 07/082,359 08/06/87 03/21/89 04/22/98 4,826,051 06/544,736 10/24/83 05/02/89 04/23/98 4,833,048 07/175,782 03/31/88 05/23/89 04/23/98 4,841,110 07/091,368 08/27/87 06/20/89 04/23/98 5,150,972 07/766,016 09/26/91 09/29/92 04/23/98 5,156,029 07/568,794 08/17/90 10/20/92 04/17/98 5,163,549 07/782,655 10/25/91 11/17/92 04/22/98 5,186,830 07/708,809 05/31/91 02/16/93 04/23/98 5,245,075 07/803,721 12/09/91 09/14/93 04/23/98 5,247,601 07/879,638 05/07/92 09/21/93 04/17/98 5,283,422 07/927,798 08/10/92 02/01/94 04/17/98