Hanna Hammarström
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Johanna (Hanna) Hammarström was a Swedish inventor who was born on 4 September 1829 and died on 27 November 1914. Although telephones had already been invented, no one in Sweden could manufacture the copper wires needed to function telephones.
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About this person
Johanna (Hanna) Hammarström was a Swedish inventor who was born on 4 September 1829 and died on 27 November 1914. Although telephones had already been invented, no one in Sweden could manufacture the copper wires needed to function telephones. She became the first person in Sweden to manufacture telephone wires and ran her own business in the production of these wires.
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