File:Cross section of forged mild steel.png

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Summary

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Description
English: Cross section of forged mild steel. The grain flow is shown clearly. According to the source, this is a part of crankshaft made by die forging for bicycle.
Date
Source 吉岡正三「金属組織学」コロナ社、1953年10月25日、p. 324
Author 吉岡正三、加藤

Licensing

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Public domain
This photograph is in the public domain in Japan because its copyright has expired according to Article 23 of the 1899 Copyright Act of Japan (English translation) and Article 2 of Supplemental Provisions of Copyright Act of 1970. This is when the photograph meets one of the following conditions:
  1. It was published before 1 January 1957.
  2. It was photographed before 1 January 1947.
It is also in the public domain in the United States because its copyright in Japan expired by 1970 and was not restored by the Uruguay Round Agreements Act.
Notes
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To uploader: Please provide the source and publication date.
  • If the photograph was also published in the United States within 30 days after publication in Japan, it might be copyrighted. If the copyright has not expired in the U.S, this file will be deleted. See Commons:Hirtle chart.
  • This template should not be used for a faithful photographic reproduction of an artwork. Under Article 23 of the former Copyright Act, its protection will be consistent with the artwork. See also Commons:When to use the PD-Art tag.

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current08:28, 3 March 2019Thumbnail for version as of 08:28, 3 March 20191,156 × 792 (2.62 MB)Yapparina (talk | contribs)User created page with UploadWizard

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