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History
Birger Ljungström
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Birger Ljungström was a Swedish engineer, technical designer, industrialist, and inventor.
Birger Ljungström (circa 1920)
Birger Ljungström (circa 1920)
Jonas Patrik Ljungström
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Jonas Patrik Ljungström was a Swedish cartographer, geodesist, and teacher at the Royal Institute of Technology.
Jonas Patrick Ljungström, c. 1870s
Jonas Patrick Ljungström, c. 1870s
Technical design of the distance tube for land surveying.
Technical design of the distance tube for land surveying.
Jonas Patrik Ljungström with a unit of the distance tube land surveying precision instrument (1877).
Jonas Patrik Ljungström with a unit of the distance tube land surveying precision instrument (1877).