This work is in the public domain in Hong Kong because, according to Section 17 in Chapter 528 (Copyright Ordinance) of the Law of Hong Kong, the copyright of this work had expired in Hong Kong. This is either because the period of 50 years from the end of the calendar year in which the author died had already ended, or the work is of unknown authorship and the period of 50 years from the end of the calendar year in which the work was first made has ended. Please also see Wikipedia:Copyrights. Important note: Works of foreign (non-U.S.) origin must be out of copyright or freely licensed in both their home country and the United States in order to be accepted on Commons. Works of Hong Kong origin that have entered the public domain in the U.S. due to certain circumstances (such as publication in noncompliance with U.S. copyright formalities) may have had their U.S. copyright restored under the Uruguay Round Agreements Act (URAA) if the work was under copyright in Hong Kong on January 1, 1996.
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Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.
Quest'opera è nel pubblico dominio negli Stati Uniti perché rispetta tre requisiti:
pubblicata per la prima volta fuori dagli Stati Uniti (e non pubblicata negli Stati Uniti entro 30 giorni),
pubblicata per la prima volta prima del 1 marzo 1989 senza avviso di copyright o prima del 1964 senza rinnovo del copyright o prima che il paese di origine stabilisse trattati sul copyright con gli Stati Uniti,
era nel pubblico dominio nel suo Paese di origine (Hong Kong) alla data URAA (1º gennaio 1996).
Per maggiori informazioni vedi Wikipedia:Non-U.S. copyrights. Nota: Per favore tieni anche presente che questo avviso non dovrebbe essere usato per registrazioni sonore.
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