5. Any notice, application. or other document lodged by post shall be deemed to have been lodged at the time when the letter containing the same \vould be delivered in the ordinary course of post. In proving such sending, it shall be sufficient to prove that the letter was properly addressed and put in the post and addressed to the Registrar of Paten ts and Designs, Patents Branch ~ Federal Ministry of Trade. Federal Capital Territory, Abuja, Nigeria. AGE~T 6. An agent shall be authorised to lodge an application on Form 2. ApPLICATION FOR REGISTRATION 7. An applica tion for the gran t of a patent shall be signed by the applicant for registration or by his agent. 8. (1) An application for the grant of a patent shall be on Form 1 and shall relate to only one invention, but may include in connection with that inven tion(a) claims(i) for any number of products, (ii) for any number of manufacturing processes for those products, and (iii) for any number of applications of those products; and (b) claims(i) for any number of processes, (ii) for the means of working those processes, for the resulting product or products and for the application of those products. (2) Every applicant claiming priority under section 27 of the Act by reason of an application for the grant of a patent made or deemed to have been made in a convention country as defined in section 27(1) of this Act which country shall be named, shall append to his application a written declaration showing the date and number of the earlier application, the country in which the application was made, the name of the person who made the earlier application, and shall furnish within three months thereafter, a copy of the earlier application certified correct by the Industrial Property Office (or its equivalent) in the country where the earlier application was made. Where an application is in a language other than English, a translation together with the name of the language shall be signed by the applicant or his agent and attached to the certified application.