Gustaf Dalén
Gustaf Dalén was born on November 30, 1869. See ranking, bio blurb, and everyone else born that day.
About Gustaf Dalén
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."