| Date | Action |
| 10/27/2004 | License Canceled |
| 12/12/2002 | License Assigned (Full Assignment) |
| 11/12/2002 | License Modified |
| 05/03/2002 | License Modified |
| 04/03/2001 | Administrative Update Applied |
| 04/03/2001 | Administrative Update Applied |
| 02/06/2001 | License Renewed |
| 11/16/2000 | License Assigned (Full Assignment) |
| 11/13/2000 | Renewal Reminder Letter Sent |
| 10/02/2000 | License Transferred |
| 11/20/1999 | Administrative Update Applied |
| 08/14/1999 | License Converted |
| 04/27/1999 | Internal Correction Applied |
| 01/22/1999 | Internal Correction Applied |
| 01/27/1997 | License Assigned (Full Assignment) |
| 04/17/1995 | License Modified |
| 02/24/1994 | License Modified |
| 11/25/1992 | License Transferred |
| 04/17/1991 | License Renewed |
| 03/31/1988 | Application Granted |