Gustaf Dalén

Swedish engineer and inventor (1869–1937)

Nils Gustaf Dalén (Swedish: [ˈɡɵ̂sːtav daˈleːn] ; 30 November 1869 – 9 December 1937) was a Swedish engineer and inventor who received the Nobel Prize in Physics in 1912 "for his invention of automatic regulators for use in conjunction with gas accumulators for illuminating lighthouses and buoys."

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