Conn. Gen. Stat. § 14-31
Any person may surrender to the commissioner the registration certificate and the number plates for any motor vehicle with a commercial registration in the name of such person, if such motor vehicle, prior to the expiration of the term of its registration, has become unfit for use, accompanied by a statement under oath attesting to the unfitness of such vehicle, and the commissioner shall thereupon make application to the Comptroller for the refund to such registrant of such portion of the registration fee for such motor vehicle as is applicable to the number of months between the date of such surrender and the date of the expiration of such registration. The Comptroller, upon such application, shall draw an order on the Treasurer in favor of such registrant for the amount of the refund provided for herein. The commissioner shall retain a record of each such application for a refund and of the action of the Comptroller thereon, and shall not reregister such motor vehicle.
Conn. Gen. Stat. § 14-31
(1949 Rev., S. 2373; P.A. 90-263, S. 5, 74; June Sp. Sess. P.A. 01-6, S. 10, 85.)