$PTEN SEC Filings

Filing Filed On
FORM 4 SUBMISSION 03 Jan 2013
FORM 4 SUBMISSION 03 Jan 2013
FORM 4 SUBMISSION 31 Dec 2012
FORM 4 SUBMISSION 31 Dec 2012
FORM 4 SUBMISSION 31 Dec 2012
FORM 4 SUBMISSION 13 Nov 2012
FORM 4 SUBMISSION 02 Oct 2012
FORM 4 SUBMISSION 21 Sep 2012
FORM 4 SUBMISSION 12 Jun 2012
FORM 4 SUBMISSION 12 Jun 2012
FORM 4 SUBMISSION 12 Jun 2012
FORM 4 SUBMISSION 30 Apr 2012
FORM 4 SUBMISSION 26 Apr 2012
FORM 4 SUBMISSION 26 Apr 2012
FORM 4 SUBMISSION 26 Apr 2012
FORM 4 SUBMISSION 04 Apr 2012
FORM 4 SUBMISSION 29 Mar 2012
FORM 4 SUBMISSION 29 Feb 2012
FORM 4 SUBMISSION 30 Jan 2012
FORM 4 SUBMISSION 04 Jan 2012