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Image: Valve-In-Head 1904 patent

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Original image(1,763 × 2,796 pixels, file size: 891 KB, MIME type: image/jpeg)

Description: Valve-In-Head engine, illustration from 1904 patent, Buick Manufacturing Company
Title: Valve-In-Head 1904 patent
Credit: US Patent Office, patent 771,095 Illustration 1
Author: Eugene Richard
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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