Historical details for ABN 26 326 675 221Version: 9.9.7

ABN details help
Entity name From To
KO, CHAO-HSIEN 06 Jul 2007 (current)
KO, CHAO-HSIEN 12 Sep 2005 06 Jul 2007
ABN Status From To
Active 12 Sep 2005 (current)
Entity type
Individual/Sole Trader
Goods & Services Tax (GST) From To
Registered 01 Feb 2012 (current)
Main business location From To
NSW 2050 31 Mar 2016 (current)
NSW 2042 24 Sep 2014 31 Mar 2016
NSW 2042 24 Mar 2014 24 Sep 2014
NSW 2042 16 Jan 2014 23 Mar 2014
NSW 2042 12 Sep 2005 16 Jan 2014
Business name(s) help
Business name From To
Chao Ko Anaesthetic Services External site 16 Feb 2013 11 Aug 2022
Trading name(s) help
From 1 November 2025, ABN Lookup will not display trading names and will only display registered business names. For more information, click help.
Trading name From To
Ko 12 Sep 2005 (current)

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