| Date | Action |
| 04/07/2005 | License Canceled |
| 11/20/2003 | Administrative Update Applied |
| 11/13/2003 | License Assigned (Full Assignment) |
| 03/29/2001 | Administrative Update Applied |
| 03/03/2001 | License Renewed |
| 02/08/2001 | License Assigned (Full Assignment) |
| 09/18/2000 | License Transferred |
| 04/06/2000 | Administrative Update Applied |
| 04/06/2000 | Administrative Update Applied |
| 04/05/2000 | Administrative Update Applied |
| 08/13/1999 | License Converted |
| 07/07/1998 | License Modified |
| 04/30/1996 | License Renewed |
| 05/28/1991 | License Modified |
| 04/04/1991 | License Modified |
| 10/05/1990 | License Modified |
| 02/10/1988 | License Modified |
| 08/23/1985 | License Modified |
| 12/16/1983 | License Modified |
| 01/25/1979 | License Modified |
| 07/15/1977 | License Modified |