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File:PKZ-helikopter indítás előtt.jpg

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Magyar: PKZ-helikopter (Tervezte: Petróczy István–Kármán Tódor–Zurovecz Vilmos) Az emelőlégcsavar megtervezését és kivitelezését Asbóth Oszkár végezte
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Source http://mek.niif.hu/03200/03277/03277.pdf
Author Unknown authorUnknown author
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This work was first published in Hungary in 1943 or before, and the identity of the author cannot be determined. According to the Hungarian copyright act of 1999 31. § (3): In the event the person of the author is unknown, the term of protection shall be seventy years and shall be counted from the first day of the year following the first disclosure of the work. For an explanation of the PD status in the US, see the template description page.

Important: "the author is unknown" is NOT the same as "I don't know who the author is". You have to provide a reason why you think no one else can know it; otherwise the image shall be deleted.

This work is in the public domain in the United States because it meets three requirements:

  1. it was first published outside the United States (and not published in the U.S. within 30 days),
  2. it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
  3. it was in the public domain in its home country (Hungary) on the URAA date (1 January 1996).

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Date/TimeThumbnailDimensionsUserComment
current19:08, 9 July 2021Thumbnail for version as of 19:08, 9 July 20211,500 × 972 (808 KB)HohumHQ version
12:34, 4 October 2016Thumbnail for version as of 12:34, 4 October 2016564 × 331 (102 KB)Denceynew
10:10, 29 April 2013Thumbnail for version as of 10:10, 29 April 2013459 × 305 (26 KB)Tambo{{Information |Description ={{hu|1=PKZ-helikopter (Tervezte: Petróczy István–Kármán Tódor–Zurovecz Vilmos) Az emelőlégcsavar megtervezését és kivitelezését Asbóth Oszkár végezte}} |Source =http://mek.niif.hu/03200/03277/03...

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