Article 16 Registration of same design in respect of other articles, etc.

If the application is for the registration of a design which has already been registered or applied for in respect of one or more articles, or consists of a design already registered or applied for with modifications or variations not sufficient to alter the character or substantially to affect the identity thereof, and it is desired to claim the protection of section 4 for such application, it shall contain the number or numbers of the registration or registrations already effected or the application or applications already made.