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 chapter. Registration of a mark on the supplemental register shall not constitute an admission that the mark has not acquired distinctiveness.
15 U.S. Code § 1095 - Registration on principal register not precluded
Act of March 19, 1920, referred to in text, is act Mar. 19, 1920, ch. 104, §§ 1–9, 41 Stat. 533, which was generally classified to sections 121 to 128 of this title, and which was repealed insofar as inconsistent with this chapter by act July 5, 1946, ch. 540, § 46(a), 60 Stat. 444.
Repeal of inconsistent provisions, effect of this chapter on pending proceedings and existing registrations and rights under prior acts, see notes set out under section 1051 of this title.