File:Bürgin Dynamo.jpg

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Deutsch: Bürgin's Gleichstromdynamo (1881)
English: Bürgin's DC dynamo (1881)
Date
Source Grace's Guide
Author Unknown authorUnknown author

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Public domain
The copyright situation of this work is theoretically uncertain, because in the country of origin copyright lasts 70 years after the death of the author, and the date of the author's death is unknown. However, the date of creation of the work was over 120 years ago, and it is thus a reasonable assumption that the copyright has expired (see here for the community discussion). Do not use this template if the date of death of the author is known.

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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current17:33, 1 November 2021Thumbnail for version as of 17:33, 1 November 2021760 × 1,222 (248 KB)KusiD (talk | contribs)Uploaded a work by unbekannt from Grace's Guide with UploadWizard

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