| Date | Action |
| 05/11/2004 | License Canceled |
| 02/12/2003 | Administrative Update Applied |
| 01/15/2003 | Administrative Update Applied |
| 01/14/2003 | Administrative Update Applied |
| 07/21/2002 | License Assigned (Full Assignment) |
| 03/07/2001 | Administrative Update Applied |
| 01/23/2001 | License Renewed |
| 11/13/2000 | Renewal Reminder Letter Sent |
| 06/07/2000 | License Modified |
| 08/13/1999 | License Converted |
| 07/27/1999 | License Modified |
| 02/11/1999 | License Transferred |
| 12/09/1997 | License Modified |
| 06/11/1997 | License Modified |
| 04/13/1995 | License Modified |
| 08/05/1993 | License Modified |
| 03/19/1992 | License Modified |
| 04/01/1991 | License Renewed |
| 07/28/1988 | License Modified |
| 10/23/1986 | License Modified |
| 12/19/1984 | Application Granted |