PICTURETEL CORP of ANDOVER, MA filed a DEF 14A with the SEC on 1999-04-27. Industry: Telephone & Telegraph Apparatus.
| Filed | Form |
|---|---|
| 2001-08-16 | SC 14D9/A |
| 2001-08-02 | SC 14D9/A |
| 2001-06-18 | SC 14D9 |
| 2001-04-27 | DEF 14A |
| 2000-04-27 | DEF 14A |
| 1999-04-27 | DEF 14A |
| 1998-04-28 | DEF 14A |
| 1997-04-28 | DEF 14A |
| 1996-04-26 | DEF 14A |
| 1995-05-12 | DEF 14A |