$PTEN
Market Cap:
$PTEN SEC Filings
| Filing | Filed On |
|---|---|
| FORM S-3 | 04 Apr 2000 |
| FORM 10-K FOR FISCAL YEAR END DECEMBER 31, 1999 | 29 Mar 2000 |
| SC 13G/A | 17 Feb 2000 |
| FORM 8-K | 09 Feb 2000 |
| FORM 8-K | 09 Feb 2000 |
| FORM 8-K | 07 Jan 2000 |
| FORM 8-K | 28 Dec 1999 |
| AMENDMENT TO SCHEDULE 13G | 09 Dec 1999 |
| FORM 8-K | 07 Dec 1999 |
| FORM 8-K | 07 Dec 1999 |
| FORM 10-Q FOR QUARTER ENDED SEPTEMBER 30, 1999 | 15 Nov 1999 |
| FORM S-3 | 28 Oct 1999 |
| FORM 8-K | 31 Aug 1999 |
| FORM 10-Q FOR QUARTER ENDED JUNE 30, 1999 | 16 Aug 1999 |
| FORM 8-K | 15 Jun 1999 |
| FORM 10-Q FOR QUARTER ENDED MARCH 31, 1999 | 14 May 1999 |
| FORM 8-K | 06 May 1999 |
| FORM 8-K | 06 May 1999 |
| DEFINITIVE PROXY STATEMENT | 30 Apr 1999 |
| FORM 10-K FOR PERIOD ENDED DECEMBER 31, 1998 | 31 Mar 1999 |
