Patents Reinstated Due to the Acceptance of a Late Maintenance Fee From 2/23/01 Patent Serial Filing Issue Granted Number Number Date Date Date Re. 33,523 07/434,418 11/13/89 01/22/91 02/27/01 4,758,533 07/099,792 09/22/87 07/19/88 03/01/01 4,784,399 07/029,449 03/23/87 11/15/88 02/27/01 4,820,259 07/055,950 06/01/87 04/11/89 02/27/01 4,987,882 07/475,223 02/05/90 01/29/91 02/27/01 5,008,678 07/487,338 03/02/90 04/16/91 03/01/01 5,024,203 07/571,322 08/22/90 06/18/91 02/23/01 5,036,569 07/474,542 02/02/90 08/06/91 02/27/01 5,108,964 07/310,381 02/15/89 04/28/92 02/28/01 5,109,127 07/608,738 11/05/90 04/28/92 03/01/01 5,121,922 07/715,688 06/14/91 06/16/92 02/26/01 5,153,057 07/690,347 04/24/91 10/06/92 02/23/01 5,159,759 07/721,170 06/26/91 11/03/92 02/27/01 5,176,899 07/797,776 11/25/91 01/05/93 02/27/01 5,385,398 07/937,890 09/30/92 01/31/95 02/27/01 5,447,321 08/273,084 07/08/94 09/05/95 02/23/01 5,450,917 08/287,551 08/08/94 09/19/95 02/27/01 5,479,654 08/039,702 03/30/93 12/26/95 02/28/01 5,491,756 08/143,981 11/04/93 02/13/96 03/01/01 5,520,698 08/325,907 10/19/94 05/28/96 02/28/01 5,539,627 08/553,046 11/03/95 07/23/96 02/27/01 5,572,871 08/283,091 07/29/94 11/12/96 03/01/01 5,589,799 08/447,349 05/23/95 12/31/96 02/27/01 5,590,262 08/146,964 11/02/93 12/31/96 03/01/01 5,627,658 08/355,769 12/14/94 05/06/97 02/23/01