Patents [CAP.400 by two or more persons jointly, to and in the name of the assignee jointly with the other applicants or their assignees. (2) A patent shall be sealed as soon as may be, but not later than twenty-two months after the date of lodging of the application there­ for: Provided that­ (i) where the Registrar or the High Court has allowed an extension of the time within which a complete specification may be lodged or accepted, a corre­ sponding extension of the time for the sealing of the relevant patent shall be allowed; (iiJ where the sealing is delayed by an appeal or by opposition to the grant of the patent; the patent may be sealed at such time as the Registrar may deter­ mine; (iii) where the patent is to be granted to the heir or legal representative of an applicant" who has died before the expiration of the time which would otherwise be allowed for sealing the patent, the patent may be sealed at such later time as the Registrar may decide; (iv) [he Registrar may, on payment of the prescribed fee, extend the period of twenty-two months for such further time as may be prescribed; (V) where it is proved to the satisfaction of the Registrar that hardship would arise in connection with the prosecution of the corresponding applica­ tion for a patent in any country outside Zambia unless the period for the sealing of such patent is extended, that period may be extended from time to time by the Registrar to such periods as appear to him to be necessary in order to prevent the hardship arising, if an application in that behalf is made to him and the prescribed fee is paid within th~ first­ mentioned period or, in the case of a subsequent a~plication under this paragraph, within the period to which such first-mentioned period was extended on the last preceding application. (As amended by G.N. No. 185 of 1964 and Act No 18 of 1980) 26. Where, at any time after a patent has been sealed in pur­ suance of an application under this Act, the Registrar is satisfied that the person to whom the patent was granted had died, or, in the case of a body corporate. had ceased to exist, before the patent was sealed, Amendment of patent granted to deceased applicant 29