| Date | Action |
| 02/13/2010 | License Canceled |
| 07/23/2002 | License Modified |
| 11/10/2001 | Administrative Update Applied |
| 10/19/2001 | Administrative Update Applied |
| 06/19/2001 | License Renewed |
| 03/19/2001 | Renewal Reminder Letter Sent |
| 02/06/2001 | License Transferred |
| 08/13/1999 | License Converted |
| 08/05/1999 | Internal Correction Applied |
| 07/21/1999 | Internal Correction Applied |
| 07/21/1999 | Internal Correction Applied |
| 07/21/1999 | Internal Correction Applied |
| 05/24/1999 | License Modified |
| 02/07/1998 | License Modified |
| 04/17/1996 | License Renewed |
| 06/11/1991 | License Modified |
| 06/04/1991 | License Modified |
| 04/06/1990 | License Modified |
| 03/09/1990 | License Modified |
| 04/12/1985 | License Modified |
| 04/02/1985 | License Modified |
| 07/09/1980 | License Modified |