File:Jack Mullin demonstration 1945.gif
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Jack_Mullin_demonstration_1945.gif (508 × 271 pixels, file size: 46 KB, MIME type: image/gif)
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Español: El 16 de mayo de 1946 se reunió el Instituto de Ingenieros de Radio (IRE, actualmente conocido como IEEE) en San Francisco, y ahí Jack Mullin brindó la primera demostración pública de un magnetófono de calidad profesional en Estados Unidos. |
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| Source | http://www.stevenlewis.info/crosby/mullin.htm |
| Author | Unknown author |
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This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:19, 8 February 2017 | | 508 × 271 (46 KB) | GelpgimLa22 (talk | contribs) | User created page with UploadWizard |
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