Menotti Nanni's invents a floating safe

Description

Inventor Menotti Nanni demonstrating that his ocean floating safe was unsinkable by locking himself inside and having it submerged into water for one minute at Battery Park, New York City

Invented, June 2, 1918

1918 - Invented

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1918 - Invented - Images

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inventor Menotti Nanni demonstrating that his ocean floating safe

He locked himself inside and submerged into water for one minute at Battery Park

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