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Image: Woodward light bulb

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Original image(693 × 644 pixels, file size: 41 KB, MIME type: image/jpeg)

Description: Figure 3 from US patent 181,613, "Improvement in Electric Lights", by Henry Woodward
Title: Woodward light bulb
Credit: https://en.wikipedia.org/wiki/File:Woodward_light_bulb.JPG
Author: Henry Woodward
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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