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Spool
Patent for a spool made by folding one piece of material into the correct shape.
Date:
February 4, 1913
Creator:
Aven, Scottie Hill
System:
The Portal to Texas History
Explosive Compound
Patent for an explosive compound made of potassium chlorate, granulated sugar, and alcohol that is not unstable.
Date:
February 25, 1913
Creator:
Dippel, Charles F.
System:
The Portal to Texas History