Hanna Hammarström (1829-1909) ran the first company that manufactured telephone wire in Sweden. Her company supplied both SAT and Ericsson.
In 1886, Lars Magnus Ericsson provided a workplace for her in his workshop at Tulegatan 5. She was offered power for machinery from the workshop through a rotating shaft that was drawn through a hole in the wall. For this power, she paid SEK 1 a day.
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