When the final payment on a retail installment contract is made in cash by the retail buyer, or his authorized representative, at the designated licensed office of the holder, the certificate of ownership and other evidence of lien, or a copy thereof, showing satisfaction of the encumbrance, unless otherwise provided by rule or regulation of the commissioner, shall be delivered at the time of such payment if demanded by the retail buyer, otherwise delivery may be made at a later date in person or by mail as may be arranged between retail buyer and holder; all other instruments, or a copy thereof, shall be delivered or mailed to the retail buyer within 35 days from the date of final payment.
N.J.S. § 17:16C-53