—(1) The Registrar may, if he thinks fit, refund any fee or part thereof which has been paid for any unused document.
(2) Every application under this Rule for the refund of any fee must be made —
by Request4 signed by the applicant or his solicitor; and
within 3 months after the date of the payment of the fee to be refunded.
(3) Where a refund of the fees paid for more than one unused document is being sought, a separate application must be made for the refund of the fee paid for each such unused document.
(4) Where an application under this Rule for the refund of any fee is not approved, the fee paid for the Request4 shall not be refundable.