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Road Building Machine

Description: Patent for a road building machine comprised of multiple mechanisms including a blast furnace, mixing chambers, and chemical tanks.
Date: December 6, 1921
Creator: Austin, Stephen F.
Partner: UNT Libraries Government Documents Department

Air-Brake and Starter for Automobiles.

Description: Patent for multiple innovations to automobile air-brakes and starters, including improvements such as ease of use, reliability, and versatility amongst vehicle models.
Date: December 13, 1921
Creator: Green, Herbert
Partner: UNT Libraries Government Documents Department
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