22. (1) A licence is not required for, and a person shall be taken to be authorised to possess, a dangerous weapon or a restricted weapon if—
(a) in the case of a common carrier or warehouseman, or an employee of such a person—the person, in the ordinary course of his or her trade or business as a common carrier or warehouseman, has the weapon in his or her possession for the purpose of carrying it or storing it for another person;
(b) in the case of the personal representative of a deceased licensee—the personal representative has the weapon in his or her possession in the ordinary course of performing the duties of a personal representative;
(c) in the case of a person to whom the Registrar has refused the grant of a licence—
(i) the person has the weapon in his or her possession for the purpose of delivering or selling the weapon to a licensed dealer or surrendering it to the Registrar, as the case may be; and
(ii) the period of 7 days after the date on which the person was notified of that refusal has not expired; and
(d) in the case of a licensee whose licence has expired or is cancelled or surrendered and on whose licence a weapon is registered or endorsed—
(i) the person has the weapon in his or her possession for the purposes of delivering or selling the weapon to a licensed dealer or surrendering it to the Registrar, as the case may be; and
(ii) the period of 7 days after the date of expiration or surrender of the licence, or the date on which cancellation of the licence took effect, has not expired.
(2) If a person who is authorised to possess a dangerous weapon under a law of a State or another Territory changes his or her ordinary place of residence to the Territory, a licence is not required for, and the person shall be taken to be authorised to possess, the weapon for a period of 28 days after the change.
(3) Where a licensee is in possession of a dangerous weapon, not being a dangerous weapon registered on his or her licence, the licensee shall be taken to be authorised to possess the weapon—
(a) for a period of 7 days after the licensee obtains possession of that weapon; or
(b) if the weapon is delivered to a licensed dealer under section 58 for the purpose of its being rendered safe—the period of 7 days after the weapon was returned to the person by the dealer has not expired.
(4) In this section—