| Date | Action |
| 04/08/2003 | License Canceled |
| 10/10/2002 | Administrative Update Applied |
| 07/26/2002 | License Renewed |
| 04/01/2002 | Renewal Reminder Letter Sent |
| 12/20/2001 | Administrative Update Applied |
| 12/31/1999 | Administrative Update Applied |
| 08/13/1999 | License Converted |
| 03/05/1998 | License Modified |
| 06/26/1997 | License Modified |
| 12/12/1991 | License Modified |
| 11/02/1991 | License Modified |
| 06/12/1991 | License Modified |
| 03/25/1991 | License Modified |
| 03/21/1991 | License Modified |
| 01/02/1987 | License Modified |
| 01/29/1982 | License Modified |
| 07/15/1977 | License Issued |