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History of US Copyright Terms

1790-01-01 00:00:01

14 years (28 years) — Copyright Act of 1790

1831-01-01 00:00:00

28 years (42 years) — Copyright Act of 1831

1909-01-01 00:00:00

28 years (56 years) — Copyright Act of 1909

1976-01-01 00:00:00

Life plus 50 years — Copyright Act of 1976

1998-01-01 00:00:00

Life plus 70 years — Copyright Term Extension Act of 1998

1998-10-07 00:00:00

Forever minus a day — Congressional Commentary

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