S. 147 : Reassessment-After the expiry of four years-Capital gains-Capital asset or stock-in-trade-Transferred to subsidiary-Exemption granted-Withdrawal of exemption-Proceedings under section 155(7B) to be within a period of four years from the end of previous relevant year in which conversion was made Held, initiation of proceedings beyond four years would be barred by limitation-Reassessment notice and order disposing the objection quashed.[S. 45, 47(iv), 47A, 144B, 148, 154, 155(7B), Art. 226]