Patents Reinstated Due to the Acceptance of a
                       Late Maintenance Fee From 2/02/01

Patent          Serial           Filing         Issue          Granted
Number          Number           Date           Date           Date

5,379,986       08/103,868       08/09/93       01/10/95       02/02/01
5,383,839       08/103,810       08/10/93       01/24/95       02/02/01
5,390,723       08/137,894       10/18/93       02/21/95       02/07/01
5,412,512       08/018,685       02/17/93       05/02/95       02/05/01
5,501,350       08/369,087       01/05/95       03/26/96       02/05/01
5,520,641       08/384,403       02/06/95       05/28/96       02/08/01
5,534,659       08/229,016       04/18/94       07/09/96       02/08/01
5,538,081       08/498,086       07/05/95       07/23/96       02/02/01
5,546,456       08/559,732       11/15/95       08/13/96       02/02/01
5,549,671       08/365,202       12/28/94       08/27/96       02/02/01
5,575,282       08/333,613       11/01/94       11/19/96       02/08/01
5,609,650       08/583,696       01/05/96       03/11/97       02/02/01