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Cylindrical slide rule (1 jan 1891 ano – 14 h 49 m, 1 jul 2019 ano)

Descrição:

Edwin Thacher introduced a cylindrical slide rule in the United States.

Adicionado na linha do tempo:

Counting/Caculating Inventions

ByEmily Stark
4 nov 2019
0
0
269

Data:

1 jan 1891 ano
14 h 49 m, 1 jul 2019 ano
~ 128 years
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