Sub section (2) and (3) of Section 23 provide: "(2) Notwithstanding anything con tained in the 1954 Act, if, in pursuance of any order under sub section (1) of section 4 of the 1954 Act in respect of any undertaking as defined in section 3 (12) of this Act, the Government have not taken possession of such undertaking before the commencement of this Act that order shall lapse and be of no effect and such undertaking shall not vest and shall be deemed never to have vested in the Govern ment under the 1954 Act and in respect of such undertaking it shall be lawful for the Govern ment to make an order under subsection (1) of section 4 of this Act and the provisions of this Act shall accordingly apply to such undertaking." "(3) Notwithstanding anything contained in the 1954 Act, where, in respect of any undertaking as defined in section 3(12) of this Act, the Government have postponed the date of vesting under the proviso to sub section (1) of 484 section 4 of the 1954 Act, that undertaking shall not vest, and shall be deemed never to have vested, in the Government under the 1954 Act, notwithstanding the expiration of a period of one year from the date originally fixed under sub section (1) of section 4 of the 1954 Act and in respect of such undertak ing it shall be lawful for the Government to make an order under sub section (1) of section 4 of this Act, and the provisions of this Act shall accordingly apply to such undertaking." The provisions of Section 23 acquire particular signifi cance in the case of the Kumbakonam Electric Supply Corpora tion Ltd. and Nagapatam Electric Supply Co. Ltd., petition ers in W.P. 14 & 15 of 1974, as, indeed, proceedings for the acquisition of the undertakings of these two companies had been initiated under the 1954 Act but full effectuation thereof had been interrupted by the interlocutory orders made by courts in proceedings in which these two companies had challenged the validity of the 1954 Act.