section_path: Scientific career/Collaboration with other scientists/Einstein as an inventor
section_name: Einstein as an inventor
paragraph_text: Einstein as an inventor
  
  In 1926, Einstein and his former student Leó Szilárd co-invented (and in 1930, patented) the Einstein refrigerator. This absorption refrigerator was then revolutionary for having no moving parts and using only heat as an input. On 11 November 1930, U.S. patent 1,781,541 was awarded to Einstein and Leó Szilárd for the refrigerator. Their invention was not immediately put into commercial production, but the most promising of their patents were acquired by the Swedish company Electrolux.
  
  Einstein also invented an electromagnetic pump, sound reproduction device, and several other household devices.