討論:美國版權法
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版權期限的問題
[編輯]en:United_States_copyright_law#Duration_of_copyright
提到：
The Copyright Act of 1976 maintained this until 2047, which as subsequently extended by the Sonny Bono Copyright Term Extension Act to 2067. As a result, no sound recording can reliably be considered in the public domain in the United States before that date, even if the recording was in existence before 1923 and even if it originated in another country where it has entered the public domain.
似乎與內容：
出於法律的改變，到2019年為止不會有作品進入公有領域。
有些出入？
外部連結已修改
[編輯]各位維基人：
我剛剛修改了美國版權法中的1個外部連結，請大家仔細檢查我的編輯。如果您有疑問，或者需要讓機械人忽略某個連結甚至整個頁面，請訪問這個簡單的FAQ獲取更多信息。我進行了以下修改：
- 向 http://www.copyright.cornell.edu/training/Hirtle_Public_Domain.htm 中加入存檔連結 https://web.archive.org/web/20120704071954/http://www.copyright.cornell.edu/training/Hirtle_Public_Domain.htm
有關機械人修正錯誤的詳情請參閱FAQ。