| Date | Action |
| 06/19/2003 | License Canceled |
| 05/30/2003 | License Modified |
| 07/12/2001 | Administrative Update Applied |
| 05/10/2001 | License Renewed |
| 04/30/2001 | Renewal Reminder Letter Sent |
| 02/21/2001 | Administrative Update Applied |
| 12/21/2000 | Administrative Update Applied |
| 05/09/2000 | Administrative Update Applied |
| 08/13/1999 | License Converted |
| 02/17/1999 | License Modified |
| 07/20/1998 | Internal Correction Applied |
| 06/04/1996 | License Renewed |
| 07/25/1991 | License Modified |
| 02/13/1991 | License Modified |
| 07/13/1990 | License Modified |
| 08/22/1989 | License Modified |
| 08/22/1989 | License Modified |
| 01/12/1988 | License Modified |
| 11/02/1984 | License Modified |
| 06/20/1984 | License Modified |
| 05/31/1984 | License Assigned (Full Assignment) |
| 05/29/1984 | License Modified |
| 05/25/1984 | License Modified |
| 05/02/1984 | License Modified |
| 10/21/1983 | License Modified |
| 10/06/1983 | License Modified |
| 08/08/1978 | License Modified |
| 08/23/1977 | License Renewed |