| Date | Action |
| 02/09/2002 | License Canceled |
| 05/04/2000 | License Renewed |
| 04/01/2000 | Renewal Reminder Letter Sent |
| 08/13/1999 | License Converted |
| 11/09/1998 | Internal Correction Applied |
| 04/21/1998 | License Modified |
| 08/14/1995 | Internal Correction Applied |
| 08/14/1995 | Internal Correction Applied |
| 06/30/1995 | Internal Correction Applied |
| 06/29/1995 | License Modified |
| 07/02/1992 | License Modified |
| 07/02/1992 | License Modified |
| 06/05/1992 | License Modified |
| 05/27/1992 | License Modified |
| 06/12/1987 | License Modified |
| 05/11/1982 | License Modified |
| 07/15/1977 | License Issued |