$PTEN Market Cap:
Research Board Inbox Deep Research Not Interested Shortlisted

$PTEN SEC Filings

Filing Filed On
FORM 10-K FOR FISCAL YEAR END DECEMBER 31, 2000 02 Mar 2001
FORM 10-K FOR FISCAL YEAR END DECEMBER 31, 1999 29 Mar 2000
FORM 10-K FOR YEAR ENDED DECEMBER 31, 1997 31 Mar 1998
FORM 10-K FOR YEAR ENDED DECEMBER 31, 1996 27 Mar 1997