| Date | Action |
| 12/11/2007 | License Canceled |
| 08/09/2004 | License Modified |
| 02/20/2004 | Administrative Update Applied |
| 08/13/1999 | License Converted |
| 04/06/1999 | License Assigned (Full Assignment) |
| 09/17/1998 | Administrative Update Applied |
| 11/07/1995 | Internal Correction Applied |
| 09/08/1995 | Internal Correction Applied |
| 02/17/1994 | License Modified |
| 01/12/1994 | License Modified |
| 03/17/1989 | License Modified |
| 03/09/1984 | License Modified |
| 04/14/1983 | License Modified |
| 05/04/1982 | License Modified |
| 01/19/1978 | License Modified |
| 11/16/1977 | License Renewed |