| Date | Action |
| 09/17/2002 | License Canceled |
| 06/24/2002 | Renewal Reminder Letter Sent |
| 01/01/2002 | License Assigned (Full Assignment) |
| 06/09/2000 | Administrative Update Applied |
| 08/13/1999 | License Converted |
| 01/29/1998 | License Modified |
| 09/18/1997 | Internal Correction Applied |
| 09/18/1997 | License Modified |
| 11/03/1993 | License Modified |
| 09/29/1993 | License Modified |
| 06/13/1991 | License Modified |
| 05/02/1991 | License Modified |
| 05/19/1987 | License Modified |
| 05/09/1986 | License Modified |
| 11/15/1985 | License Modified |
| 07/05/1985 | License Modified |
| 10/22/1980 | License Modified |