Patents Reinstated Due to the Acceptance of a
                       Late Maintenance Fee From 6/08/01

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date


RE. 34,832      07/859,060      03/27/92        01/17/95        06/12/01
RE. 36,965      09/213,631      12/17/98        11/21/00        06/11/01
4,772,453       06/707,496      03/01/85        09/20/88        06/11/01
4,804,170       07/013,408      02/11/87        02/14/89        06/08/01
4,807,539       07/189,017      05/02/88        02/28/89        06/11/01
4,816,824       07/126,385      11/30/87        03/28/89        06/11/01
4,831,562       07/045,047      05/01/87        05/16/89        06/08/01
5,117,602       07/742,194      08/02/91        06/02/92        06/08/01
5,133,428       07/680,524      04/04/91        07/28/92        06/12/01
5,154,118       07/838,174      02/20/92        10/13/92        06/14/01
5,154,128       07/623,917      01/31/91        10/13/92        06/08/01
5,171,687       07/580,032      09/10/90        12/15/92        06/12/01
5,177,917       07/801,511      12/02/91        01/12/93        06/11/01
5,188,207       07/811,718      12/20/91        02/23/93        06/14/01
5,191,162       07/755,338      09/05/91        03/02/93        06/14/01
5,213,327       07/781,867      10/24/91        05/25/93        06/08/01
5,411,516       07/888,010      05/26/92        05/02/95        06/11/01
5,416,928       08/183,817      01/21/94        05/23/95        06/13/01
5,427,003	08/169,034	12/20/93	06/27/95	06/13/01
5,448,443       07/921,337      07/29/92        09/05/95        06/11/01
5,457,981       08/190,256      02/01/94        10/17/95        06/08/01
5,548,511       07/968,290      10/29/92        08/20/96        06/11/01
5,550,166       08/407,430      03/17/95        08/27/96        06/08/01
5,556,361       08/498,470      07/05/95        09/17/96        06/11/01
5,579,491       08/271,617      07/07/94        11/26/96        06/11/01
5,579,735       08/219,164      04/01/94        12/03/96        06/08/01
5,586,039       08/395,023      02/27/95        12/17/96        06/11/01
5,599,776       08/289,774      08/12/94        02/04/97        06/13/01
5,601,137       08/576,348      12/21/95        02/11/97        06/13/01
5,601,550       08/329,068      10/25/94        02/11/97        06/11/01
5,602,228       08/467,099      06/06/95        02/11/97        06/14/01
5,604,151       08/439,034      05/11/95        02/18/97        06/11/01
5,606,873       08/480,368      06/07/95        03/04/97        06/11/01
5,621,637       08/309,806      09/21/94        04/15/97        06/11/01