File:Aurel Vlaicu patent drawings.png

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Description
English: Aurel Vlaicu patent drawings
Date
Source Drawing of 1911 patents: AT60800, CH54597, DK15328, FR422554, GB191026658
Author Aurel Vlaicu

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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:Aurel_Vlaicu_patent_drawings.png

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Aurel Vlaicu patent drawings

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2 October 1911Gregorian

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