$CHKIF SEC Filings

Filing Filed On
6-K 31 Aug 2009
6-K 26 Aug 2009
6-K 21 Aug 2009
6-K 17 Aug 2009
6-K 14 Aug 2009
6-K 31 Jul 2009
6-K 20 Jul 2009
6-K 30 Jun 2009
6-K 03 Jun 2009
6-K 02 Jun 2009
6-K 27 May 2009
6-K 18 May 2009
6-K 14 May 2009
6-K 13 May 2009
6-K 13 May 2009
6-K 07 May 2009
6-K 27 Apr 2009
6-K 24 Apr 2009
6-K 14 Apr 2009
6-K 14 Apr 2009