The Delhi High Court has appointed Senior Advocate Arvind P Datar as an amicus curiae to assist it in a petition seeking exemption of Integrated Goods and Services Tax(IGST) for oxygen concetrators imported for the use of individuals.A division bench comprising Justices Rajiv Shakhder and Talwant Singh passed the order on May 6 in the case Gurucharan Singh vs Ministry of Finance.Earlier,...