| Date | Action |
| 03/17/2005 | License Canceled |
| 06/17/2003 | Administrative Update Applied |
| 05/14/2003 | Administrative Update Applied |
| 03/13/2001 | License Renewed |
| 11/13/2000 | Renewal Reminder Letter Sent |
| 08/14/1999 | License Converted |
| 12/23/1997 | Internal Correction Applied |
| 02/26/1996 | License Assigned (Full Assignment) |
| 06/22/1994 | License Modified |
| 03/19/1992 | License Modified |
| 02/14/1992 | License Assigned (Full Assignment) |
| 01/30/1992 | License Modified |
| 12/12/1991 | License Modified |
| 02/13/1991 | License Modified |
| 02/13/1991 | License Modified |
| 01/31/1991 | License Modified |
| 06/14/1990 | License Modified |
| 06/14/1990 | License Modified |
| 01/26/1990 | License Modified |
| 01/15/1990 | License Modified |
| 12/28/1989 | License Modified |
| 01/25/1989 | License Modified |
| 12/14/1988 | License Modified |
| 11/02/1988 | License Modified |
| 02/23/1988 | License Modified |
| 07/17/1987 | License Modified |
| 08/14/1986 | License Modified |
| 07/09/1986 | License Modified |
| 07/23/1985 | License Modified |
| 05/16/1985 | License Modified |
| 03/28/1985 | Application Granted |