904.01 Number of Specimens
One specimen for each class is required in an application for registration under §1(a) of the Trademark Act, or in an allegation of use in an application under §1(b). If a single specimen supports multiple classes, the applicant should indicate which classes are supported by the specimen. The examining attorney need not require multiple copies of the specimen. The examining attorney should enter a Note to the File in the record indicating which class(es) the specimen supports.