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Hace 1 día · Aleksandr Porokhovschikov (1892–1941), Russia – Vezdekhod (the first prototype tank, or tankette, and the first caterpillar amphibious ATV) Ignazio Porro (1801–1875), Italy – Porro prism, strip camera; Valdemar Poulsen (1869–1942), Denmark – magnetic wire recorder, arc converter; Joseph Priestley (1733–1804), UK – soda water
