| Date | Action |
| 09/17/2002 | License Canceled |
| 01/01/2002 | License Assigned (Full Assignment) |
| 10/16/2001 | License Renewed |
| 09/10/2001 | Renewal Reminder Letter Sent |
| 06/09/2000 | Administrative Update Applied |
| 06/09/2000 | Administrative Update Applied |
| 08/13/1999 | License Converted |
| 06/18/1999 | License Modified |
| 03/26/1999 | Internal Correction Applied |
| 01/29/1998 | License Modified |
| 10/09/1996 | License Renewed |
| 11/17/1994 | Internal Correction Applied |
| 11/17/1994 | Internal Correction Applied |
| 11/15/1994 | License Modified |
| 10/07/1993 | License Modified |
| 12/06/1991 | License Modified |
| 12/02/1991 | License Modified |
| 09/07/1990 | License Modified |
| 06/13/1990 | License Modified |
| 01/31/1990 | License Modified |
| 01/29/1990 | License Modified |
| 12/19/1989 | License Modified |
| 06/02/1989 | License Modified |
| 05/05/1989 | License Modified |
| 05/27/1987 | License Modified |
| 05/19/1987 | License Modified |
| 11/15/1985 | License Modified |
| 07/05/1985 | License Modified |
| 11/26/1982 | License Modified |
| 12/30/1977 | License Renewed |
| 07/29/1977 | License Modified |