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Mechanical Movement

Description: Patent for a mechanical movement. This invention is intended to producing more power. Illustration included.
Date: December 29, 1903
Creator: Stevens, Samuel David
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Fire Extinguisher

Description: Patent for fire extinguisher improvements so as to use carbon dioxide to extinguish the flame.
Date: December 29, 1914
Creator: Parker, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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