Subject to such conditions as may be prescribed, where any licensed manufacturer acquires from a person goods, in respect of which sales tax has previously been paid, the vendor may apply to the Director General for a refund of the sales tax so paid in respect of the goods to which the transaction relates, provided such manufacturer holds the approval and authorization of the Director General to acquire such goods free of sales tax; and where the Director General is satisfied that the prescribed conditions have been complied with, he shall refund the vendor the amount of sales tax previously paid by such person in respect of such goods:

Provided that no such refund shall be allowed unless a claim in respect thereof is made within one year after the date of the transaction to which the claim relates.