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File:Inglis bridge patent.png

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Description
English: Inglis footbridge from its 1916 patent
Date
Source Military Bridge and the like. US-Patent US1181013A vom 25. April 1916
Author Charles Edward Inglis
Permission
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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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current14:48, 16 February 2013Thumbnail for version as of 14:48, 16 February 20132,272 × 1,680 (294 KB)Dumelow (talk | contribs){{Information |Description=Inglis footbridge from its 1916 patent |Source=http://www.google.pt/patents?id=RUhTAAAAEBAJ |Date=25 April 1916 |Author=Charles Edward Inglis |Permission={{Template:PD-US-patent-no notice}} |other_versions= }}

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