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Image: Middlebrook paperclip machine patent2

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Original image(700 × 635 pixels, file size: 42 KB, MIME type: image/gif)

Description: 1899 US patent for paper clip machine
Title: Middlebrook paperclip machine patent2
Credit: USPTO
Author: USPTO ( Inventor: W.D. Middlebrook )
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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