3-D GEOPHYSICAL INC of LITTLETON, CO filed a SC 14D9/A with the SEC on 1998-04-01. Industry: Oil & Gas Field Exploration Services.
| Filed | Form |
|---|---|
| 1998-04-10 | SC 14D9/A |
| 1998-04-10 | SC 14D1/A |
| 1998-04-01 | SC 14D9/A |
| 1998-04-01 | SC 14D1/A |
| 1998-03-27 | SC 14D9/A |
| 1998-03-27 | SC 14D1/A |
| 1998-03-25 | SC 14D9/A |
| 1998-03-19 | SC 14D9/A |
| 1998-03-19 | SC 14D1/A |
| 1998-03-13 | SC 14D9 |
| 1998-03-13 | SC 14D1 |
| 1997-04-22 | DEF 14A |