Patent Reinstated Due to the Acceptance of a Late Maintenance Fee From 12/31/99 Patent Serial Filing Issue Granted Number Number Date Date Date 4,651,431 06/735,373 05/17/85 03/24/87 01/03/00 4,914,556 07/224,436 07/26/88 04/03/90 01/03/00 4,927,141 07/383,607 07/24/89 05/22/90 01/04/00 4,963,995 07/289,776 12/27/88 10/16/90 01/06/00 4,976,528 07/311,860 02/17/89 12/11/90 01/04/00 4,976,732 06/649,909 09/12/84 12/11/90 01/06/00 5,005,061 07/474,889 02/05/90 04/02/91 01/03/00 5,005,069 07/516,656 04/30/90 04/02/91 01/03/00 5,008,736 07/438,382 11/20/89 04/16/91 01/03/00 5,018,949 07/473,162 01/31/90 05/28/91 01/06/00 5,028,010 07/452,223 12/18/89 07/02/91 01/04/00 5,032,400 07/430,353 11/02/89 07/16/91 01/05/00 5,173,651 07/220,070 07/15/88 12/22/92 01/06/00 5,242,565 07/727,877 07/10/91 09/07/93 01/04/00 5,256,411 07/720,591 06/28/91 10/26/93 01/04/00 5,263,866 07/939,660 09/03/92 11/23/93 01/03/00 5,274,573 07/681,228 04/05/91 12/28/93 01/04/00 5,314,323 07/944,892 09/09/92 05/24/94 01/04/00 5,321,403 08/048,537 04/14/93 06/14/94 01/04/00 5,321,978 08/043,121 04/05/93 06/21/94 01/04/00 5,324,479 07/383,032 07/21/89 06/28/94 01/03/00 5,348,571 08/001,791 01/08/93 09/20/94 01/03/00 5,370,039 08/035,734 03/23/93 12/06/94 01/04/00 5,389,767 08/002,154 01/11/93 02/14/95 01/04/00 5,398,947 08/165,200 12/13/93 03/21/95 01/03/00 5,406,070 08/168,700 12/16/93 04/11/95 01/04/00 5,408,138 08/130,892 10/04/93 04/18/95 01/03/00 5,420,697 08/020,368 02/22/93 05/30/95 01/03/00 5,431,112 08/220,749 03/31/94 07/11/95 01/04/00 5,437,875 08/295,661 08/24/94 08/01/95 01/03/00 5,440,238 07/948,535 09/21/92 08/08/95 01/05/00 5,452,266 08/308,336 09/19/94 09/19/95 01/03/00 5,454,331 08/165,260 12/10/93 10/03/95 01/04/00 5,455,573 08/358,704 12/19/94 10/03/95 01/04/00 5,458,274 08/196,697 02/15/94 10/17/95 01/05/00