| Date | Action |
| 08/31/2007 | License Canceled |
| 12/18/2002 | Administrative Update Applied |
| 06/15/2002 | License Renewed |
| 03/18/2002 | Renewal Reminder Letter Sent |
| 09/28/2001 | Administrative Update Applied |
| 09/27/2001 | Administrative Update Applied |
| 09/27/2001 | Administrative Update Applied |
| 08/14/1999 | License Converted |
| 02/08/1999 | Internal Correction Applied |
| 06/30/1997 | Internal Correction Applied |
| 06/17/1997 | Internal Correction Applied |
| 06/11/1997 | Internal Correction Applied |
| 06/11/1997 | License Modified |
| 07/31/1991 | License Modified |
| 07/31/1991 | License Modified |
| 08/04/1989 | License Modified |
| 07/27/1984 | License Modified |