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2 ene 1929 año - Creation of the Problem Cylinder by M.E. LaZerte
Descripción:
LaZerte, developed a mechanical cylinder that would check for a correctly inputted answer.
Añadido al timeline:
12 ene 2020
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216
Timeline of IDT History
fecha:
2 ene 1929 año
Ahora mismo
~ 95 years ago