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Fredrik Ljungström
Fredrik Ljungström (16 June 1875 in Stockholm – 18 February 1964 in Stockholm) was a Swedish engineer, technical designer and an industrialist. Together with his older brother Birger Ljungström (1872–1948) he invented high-pressure steam boilers.
==Steam turbines==
They also worked out a new type steam turbine, the Ljungström radial turbine, patened by his brother Birger Ljungström in 1894. The turbine principle was the base for the company ALÅ (Ljungström steam turbine Co.) founded in 1908 that owned all the patents. In 1913 they founded the separate company STAL (Swedish turbine manufacturing Co.), and moved the small workshop from Stockholm to Finspång. This company handled the manufacturing and sales of complete steam turbine driven electric generators. STAL was acquired in 1916 by ASEA as they wished to market complete packages with turbine driven electric generators. The brothers then left the company but kept control over the all the patents and manufacturing licenses for the Ljungström steam turbines within the company ALÅ.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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