AMERITECH CORP /DE/ of CHICAGO, IL filed a DEFA14A with the SEC on 1998-11-10. Industry: Telephone Communications (No Radiotelephone).
| Filed | Form |
|---|---|
| 1999-03-02 | DEF 14A |
| 1998-11-10 | DEFA14A |
| 1998-10-20 | DEFM14A |
| 1998-02-27 | DEF 14A |
| 1997-02-26 | DEF 14A |
| 1996-02-29 | DEF 14A |
| 1996-01-22 | PRE 14A |
| 1995-03-02 | DEF 14A |
| 1994-03-02 | DEF 14A |