$PTEN SEC Filings

Filing Filed On
FORM 4 SUBMISSION 05 Jan 2009
FORM 4 SUBMISSION 05 Jan 2009
FORM 4 SUBMISSION 05 Jan 2009
FORM 4 SUBMISSION 02 Sep 2008
FORM 4 SUBMISSION 11 Jun 2008
FORM 4 SUBMISSION 06 Jun 2008
FORM 4 SUBMISSION 06 Jun 2008
FORM 4 SUBMISSION 15 May 2008
FORM 4 SUBMISSION 15 May 2008
FORM 4 SUBMISSION 08 May 2008
FORM 4 SUBMISSION 08 May 2008
FORM 4 SUBMISSION 29 Apr 2008
FORM 4 SUBMISSION 29 Apr 2008
FORM 4 SUBMISSION 29 Apr 2008
FORM 4 SUBMISSION 29 Apr 2008
FORM 4 SUBMISSION 29 Apr 2008
FORM 4 SUBMISSION 24 Apr 2008
FORM 4 SUBMISSION 10 Apr 2008
FORM 4 SUBMISSION 03 Jan 2008
MAIN DOCUMENT DESCRIPTION 03 Jan 2008