$CHKIF SEC Filings

Filing Filed On
20-F 25 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
6-K 14 Apr 2009
6-K 14 Apr 2009
6-K 08 Apr 2009
6-K 02 Apr 2009
6-K 13 Mar 2009
6-K 11 Mar 2009
6-K 11 Mar 2009