| Date | Action |
| 10/11/2000 | License Canceled |
| 04/01/2000 | License Assigned (Full Assignment) |
| 12/10/1999 | Administrative Update Applied |
| 08/14/1999 | License Converted |
| 06/24/1999 | Internal Correction Applied |
| 12/04/1998 | License Assigned (Full Assignment) |
| 07/27/1998 | License Modified |
| 06/06/1997 | License Modified |
| 07/30/1996 | License Transferred |
| 05/28/1996 | License Modified |
| 03/21/1995 | License Transferred |
| 07/19/1994 | License Modified |
| 05/31/1994 | License Transferred |
| 08/17/1993 | License Modified |
| 10/07/1991 | License Assigned (Full Assignment) |
| 06/17/1991 | License Assigned (Full Assignment) |