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Descriere
English: Charles Gordon Curtis, inventor of the Curtis steam turbine
Deutsch: Charles Gordon Curtis, Erfinder der Curtis-Turbine
Dată approximately 1910 (Curtis, born 1860, is about 50 years old on the photo)
Sursă http://www.edisonexploratorium.org/bio/curtis.htm
Autor Photographer anonymous


Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Charles_Gordon_Curtis.jpg
Public domain
Public domain
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The author of this work is anonymous and this work was made available to the public more than 50 years ago. According to the Berne convention Art. 7, and the laws of many countries, this work is in the public domain.
Note: This template does not apply to works from countries that extended the Berne Convention or that did not sign it. In particular, this includes the European Union, the United States, India, and Russia. Please use {{PD-anon-70-EU}}, {{PD-US}}, {{PD-India}}, {{PD-Russia-1996}}, etc. in such cases and check Commons:Anonymous works every time, carefully!

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actuală14 octombrie 2008 15:25Miniatură pentru versiunea din 14 octombrie 2008 15:25197x300 (10 KB)Tetris L{{Information |Description= *en: Charles Gordon Curtis, inventor of the Curtis steam turbine *de: Charles Gordon Curtis, Erfinder der Curtis-Turbine |Source=http://www.edisonexploratorium.org/bio/curtis.htm |Date=approximate

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