Act of July 5, 1946, ch. 540, tit. II, sec. 27 (as amended)

Sec. 27. Registration of a mark on the supplemental register, or under the Act of March 19, 1920, shall not preclude registration by the registrant on the principal register established by this Act. Registration of a mark on the supplemental register shall not constitute an admission that the mark has not acquired distinctiveness.[15 U.S.C. 1095]