| Date | Action |
| 08/14/1999 | License Converted |
| 04/23/1999 | License Canceled |
| 02/25/1999 | License Assigned (Full Assignment) |
| 12/02/1997 | License Assigned (Full Assignment) |
| 06/23/1997 | License Assigned (Full Assignment) |
| 08/30/1996 | Internal Correction Applied |
| 08/22/1996 | Internal Correction Applied |
| 08/22/1996 | Internal Correction Applied |
| 08/22/1996 | Internal Correction Applied |
| 08/20/1996 | Internal Correction Applied |
| 02/28/1996 | License Transferred |
| 02/28/1996 | License Transferred |
| 04/17/1991 | License Renewed |
| 02/05/1990 | License Assigned (Full Assignment) |
| 03/17/1988 | License Modified |
| 10/17/1987 | Application Granted |