48 CAP. 400] Patents Nyasaland or, after the 1st January, 1964, in the former Protectorate of Northern Rhodesia or, after the 24th October, 1964, in the Republic commercially, otherwise than for the purpose of reasonable technical trial thereof. (2) An invention claimed in a complete specification shall not be deemed to have been anticipated by reason only of the communica­ tion of the invention to a Government department or to any person . authorised by the Minister to investigate the invention or its merits, or of anything done by any person whomsoever in consequence of such a communication, for the purpose of the investigation. (As amended by G.N. No. 185 of 1964 and S.l. No. 175 of 1965) Co-ownership of patents 47. (1) Where a patent is granted to two or more persons, each of those persons shall, unless an agreement to the contrary is in force, be entitled to an equal undivided share in the patent. (2) Subject to the provisions of this section, where two or more persons are registered as patentees then, unless an agreement to the contrary is in force, each of those persons shall be entitled by him­ self or his agents, to make, use, exercise and vend the patented inven­ tion for his own benefit without accounting to the other or others. (3) Subject to the provisions of subsections (6), (7) and (8) and to any agreement for the time being in force, a licence under a patent shall not be granted, and a share in a patent shall not be assigned, except with the consent of all persons, other than the licensor or assignor, who are registered as patentees. (4) Where a patented article is sold by one of two or more persons registered as patentees, the purchaser and any person claiming through him shall in respect of such article be entitled to deal with it in the same manner as if it had been sold by a sole patentee. (5) Subject to the provisions of this section, the rules of law applicable to the ownership and devolution of movable or personal property generally shalf apply in relation to patents as they apply in relation to other incorporeal rights or choses in action. (6) Where two or more persons are registered as patentees, the Registrar may, upon application made to him in the prescribed man­ ner by any of those persons, give such directions in accordance with the application as to the sale or lease of the patent or any interest therein, the grant of licences under the patent or the exercise of any right under subsections (1) to (5) in relation thereto, as he thinks fit. (7) If any person registered as patentee fails to execute any instru­ ment or to do any other thing required for the carrying out of any direction given under this section within fourteen days after being requested in writing so to do by any of the other persons so regis­