| Date | Action |
| 04/08/2003 | License Canceled |
| 05/06/2002 | License Assigned (Full Assignment) |
| 09/15/2001 | License Renewed |
| 08/27/2001 | Renewal Reminder Letter Sent |
| 08/21/2000 | License Transferred |
| 08/15/2000 | Administrative Update Applied |
| 03/22/2000 | Administrative Update Applied |
| 08/14/1999 | License Converted |
| 12/02/1998 | License Modified |
| 08/21/1996 | License Renewed |
| 09/08/1993 | License Modified |
| 11/21/1991 | License Modified |
| 10/15/1991 | License Modified |
| 12/05/1986 | License Modified |
| 04/05/1985 | License Modified |
| 03/20/1985 | License Modified |
| 12/28/1984 | License Issued |