However, works created before January 1, 1978, but not published or registered for copyright until recently, are addressed in a special section (17 U.S.C. § 303) and may remain protected until the end of 2047.
Porén, as obras creadas antes do 1 de xaneiro de 1978 pero non publicadas ou rexistradas para o copyright ata hai pouco están sometidas a unha sección especial (17 U.S.C. § 303) e poden permanecer protexidas ata 2047.