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Image: Inglis bridge patent

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Description: Inglis footbridge from its 1916 patent
Title: Inglis bridge patent
Credit: Military Bridge and the like. US-Patent US1181013A vom 25. April 1916
Author: Charles Edward Inglis
Permission: Public domainPublic domainfalsefalse 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 Template:PD-ineligible.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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