File:Illustration of revolving stairs, 9 August 1859 (cropped).jpg
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[edit]DescriptionIllustration of revolving stairs, 9 August 1859 (cropped).jpg |
English: Illustration from U.S. Patent #25,076: Revolving Stairs. Issued to Nathan Ames, 9 August 1859. |
Date | |
Source | US Pat 25,076. |
Author | Nathan Ames. Available from the United States Patent Office Web site. Also reproduced by Google Patents. |
This file has been extracted from another file : Illustration of revolving stairs (U.S. Patent 25,076 issued to Nathan Ames, 9 August 1859).jpg |
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[edit]Public domainPublic domainfalsefalse |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:46, 30 November 2018 | 1,248 × 1,264 (305 KB) | WikiJunkie (talk | contribs) | File:Illustration of revolving stairs (U.S. Patent 25,076 issued to Nathan Ames, 9 August 1859).jpg cropped 26 % horizontally, 47 % vertically using CropTool with precise mode. |
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