(2)
The application shall state the class in which the design is to be registered, and the article or articles to which the design is to be applied.
(3)
If it is desired to register the same design in more than one class of article, a separate application shall be made in each class of article and the application shall contain the number or numbers of the registration or registrations already effected.
(4)
If so required by the Controller, the applicant shall state purpose for which the article is used.