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File:Insulated electrical conductor (patent drawing).png

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Description
English: Insulated electrical conductor, patent n° 514,167.
Date
Source US Patent n° 514,167
Author Nikola Tesla
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Public domain The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)

The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}.

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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, 1931.
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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:Insulated_electrical_conductor_(patent_drawing).png

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The original description page was here. All following user names refer to en.wikipedia.
  • 2007-05-04 23:52 Reddi 1672×829 (23613 bytes)

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current15:45, 27 April 2010Thumbnail for version as of 15:45, 27 April 20101,672 × 829 (23 KB)File Upload Bot (Magnus Manske) (talk | contribs) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Source: United States Patent 514167}} |Source=Transferred from [http://en.wikipedia.org en.wikipedia];

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