| Filed On | Filing |
|---|---|
| 06 Apr 2005 | FORM S-3 |
| 09 Feb 2004 | REGISTRATION STATEMENT |
| 04 Oct 2002 | REGISTRATION STATEMENT |
| 09 Feb 2001 | FORM S-3 FOR NORTHWEST NATURAL GAS COMPANY |
| 30 Sep 1998 | FORM S-3 OF NORTHWEST NATURAL GAS COMPANY |
| 19 Mar 1998 | FORM S-3 |
| 01 Nov 1996 | FORM S-3 OF NORTHWEST NATURAL GAS COMPANY |
| 25 May 1994 | FORM S-3 OF NORTHWEST NATURAL GAS COMPANY |
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