File:Teslapatent454622.jpg
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Summary[edit]
| Description |
English: System of Electric Lighting. |
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| Source | US-Patent US454622 | ||||||||||||||||||||
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Licensing[edit]
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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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:48, 16 July 2012 | | 524 × 488 (22 KB) | Wdwd (talk | contribs) | == {{int:filedesc}} == {{Information |Description={{en|System of Electric Lighting.}} |Source=US-Patent US454622 |Date=23. June 1891 |Author=Nikola Tesla }} == {{int:license-header}} == {{PD-US-patent-no notice}} Category:Nikola Tesla |
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