| Date | Action |
| 05/06/2001 | License Status Set to Expired |
| 11/13/2000 | Renewal Reminder Letter Sent |
| 08/13/1999 | License Converted |
| 03/29/1999 | Internal Correction Applied |
| 09/20/1996 | License Assigned (Full Assignment) |
| 04/23/1996 | License Assigned (Full Assignment) |
| 08/16/1995 | License Assigned (Full Assignment) |
| 06/28/1994 | License Transferred |
| 12/07/1993 | License Modified |
| 05/29/1991 | License Modified |
| 04/17/1991 | License Renewed |
| 12/26/1990 | License Modified |
| 12/26/1990 | License Modified |
| 07/30/1990 | License Modified |
| 09/07/1988 | License Modified |
| 05/02/1988 | License Modified |
| 01/23/1988 | License Modified |
| 11/25/1987 | License Modified |
| 02/26/1986 | Application Granted |