$PTEN SEC Filings

Filing Filed On
FORM 4 SUBMISSION 31 May 2005
FORM 4 SUBMISSION 29 Apr 2005
FORM 4 SUBMISSION 29 Apr 2005
FORM 4 SUBMISSION 29 Apr 2005
FORM 4 SUBMISSION 29 Apr 2005
FORM 4 SUBMISSION 29 Apr 2005
FORM 4 SUBMISSION 29 Apr 2005
FORM 4 SUBMISSION 08 Apr 2005
FORM 4 SUBMISSION 24 Mar 2005
FORM 4 SUBMISSION 10 Mar 2005
FORM 4 SUBMISSION 10 Mar 2005
FORM 4 SUBMISSION 02 Mar 2005
FORM 4 SUBMISSION 02 Mar 2005
FORM 4 SUBMISSION 01 Mar 2005
FORM 4 SUBMISSION 04 Jan 2005
FORM 4 SUBMISSION 04 Jan 2005
FORM 4 SUBMISSION 04 Jan 2005
FORM 4 SUBMISSION 04 Jan 2005
FORM 4 SUBMISSION 04 Jan 2005
FORM 4 SUBMISSION 23 Nov 2004