Patents Reinstated Due To The Acceptance of a Late Maintenance Fee From 7/19/96 Patent Number Serial Number Filing Date Issue Date Granted Date 4,601,885 06/385,500 06/07/82 07/22/86 07/25/96 4,624,897 06/618,784 06/08/84 11/25/86 07/23/96 4,667,593 06/904,605 09/08/86 05/26/87 07/23/96 4,674,289 06/748,866 06/26/85 06/23/87 07/26/96 4,952,012 07/222,571 11/17/88 08/28/90 07/23/96 5,051,813 07/619,108 11/27/90 09/24/91 07/24/96 5,073,280 07/535,473 06/08/90 12/17/91 07/23/96 5,106,508 07/588,535 09/26/90 04/21/92 07/23/96 5,107,823 07/676,599 03/28/91 04/28/92 07/25/96