In 1739, the Royal Swedish Academy of Sciences was founded, with people such as Carl Linnaeus and Anders Celsius as early members. Many of the companies founded by early pioneers still remain major international brands. Gustaf Dalén founded AGA, and received the Nobel Prize for his sun valve. Alfred Nobel invented dynamite and instituted the Nobel Prizes. Lars Magnus Ericsson started the company bearing his name, Ericsson, still one of the largest telecom companies in the world. Jonas Wenström was an early pioneer in alternating current and is along with Serbian-American inventor Nikola Tesla credited as one of the inventors of the three-phase electrical system.