// todo need optimize like in event.jsp. Add indexing or not indexing this page. Improved slide rule (1 janv. 1859 – 14 h 49 min, 1 juill. 2019 ans) (La bande de temps)
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Improved slide rule (1 janv. 1859 – 14 h 49 min, 1 juill. 2019 ans)

Description:

French artillery lieutenant Amédée Mannheim invented an improved slide rule.

Ajouté au bande de temps:

Counting/Caculating Inventions

ByEmily Stark
4 nov. 2019

Date:

1 janv. 1859
14 h 49 min, 1 juill. 2019 ans
~ 160 years
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