Image: US patent 594059 diagram
US_patent_594059_diagram.png (349 × 435 pixels, file size: 81 KB, MIME type: image/png)
Description: Diagram from US patent 594,059 showing an improved railway coupler design
Title: US patent 594059 diagram
Credit: US patent 594,059
Author: Andrew Jackson Beard
Permission: PD-US-patent
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
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