THERMO OPTEK CORP of FRANKLIN, MA filed a SC 13E3/A with the SEC on 2000-05-12. Industry: Laboratory Analytical Instruments.
| Filed | Form |
|---|---|
| 2000-05-12 | SC 13E3/A |
| 2000-04-20 | SC 13E3/A |
| 2000-04-17 | SC 13E3/A |
| 2000-03-06 | SC 13E3 |
| 1999-04-20 | DEF 14A |
| 1998-04-30 | DEF 14A |
| 1997-05-02 | DEF 14A |