| Date | Action |
| 07/28/2012 | License Status Set to Expired |
| 03/05/2012 | Renewal Reminder Letter Sent |
| 06/25/2003 | License Renewed |
| 03/04/2002 | Renewal Reminder Letter Sent |
| 03/14/2000 | License Modified |
| 08/27/1999 | License Converted |
| 08/13/1999 | License Converted |
| 04/22/1999 | Internal Correction Applied |
| 05/28/1997 | License Modified |
| 05/06/1997 | Internal Correction Applied |
| 08/21/1996 | License Renewed |
| 08/24/1995 | License Modified |
| 11/12/1991 | License Modified |
| 08/09/1990 | License Modified |
| 06/27/1990 | License Modified |
| 08/16/1985 | License Modified |
| 02/08/1985 | License Modified |
| 01/24/1985 | License Modified |
| 06/01/1983 | License Modified |
| 01/30/1980 | License Issued |