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Mechanical Movement
Patent for a mechanical movement. This invention is intended to producing more power. Illustration included.
Date:
December 29, 1903
Creator:
Stevens, Samuel David
System:
The Portal to Texas History
Fire Extinguisher
Patent for fire extinguisher improvements so as to use carbon dioxide to extinguish the flame.
Date:
December 29, 1914
Creator:
Parker, Howard R.
System:
The Portal to Texas History