You were right.

Einstein co-invented a unique refrigerator design.

Albert Einstein, the renowned theoretical physicist, collaborated with fellow physicist Leo Szilard in the 1920s to co-design a novel refrigerator. This invention, often referred to as the 'Einstein refrigerator,' was developed partly to address safety concerns with existing refrigeration technologies of the time, which sometimes used toxic gases.

The chain

1. Albert Einstein

   Renowned theoretical physicist.

   co-invented a design forTechnological

   Albert Einstein, in collaboration with Leo Szilard, co-designed a unique type of refrigerator in the 1920s, referred to as the 'Einstein refrigerator'.

   • ListenLegendary Physicists Albert Einstein and Leo Szilard Once Teamed Up To Design A Refrigerator· Spotify
   • ListenLegendary Physicists Albert Einstein and Leo Szilard Once Teamed Up To Design A Refrigerator· Cool Weird Awesome with Brady Carlson
   • Read paperAlbert Einstein - refrigerator technician? [Resources_History]· Mark E. Anderson
   • WatchThat Time Albert Einstein Decided to Try to Revolutionize Keeping Food Cold· Today I Found Out
2. Einstein-Szilard Refrigerator

   A specific refrigerator design co-invented by Albert Einstein and Leo Szilard.

   is a type ofConceptual

   The Einstein-Szilard Refrigerator is a specific invention that falls under the general category of refrigerators.

   • WatchThe Revolutionary Einstein Refrigerator - A Forgotten Invention· Sapiens Spectrum
   • WatchAlbert Einstein receives a patent for his fridge the so-called ‘Einstein refrigerator’· Republican News
   • WatchThe Refrigerator That Ran on Fire – Einstein’s Forgotten Invention #sciencefacts #futuretech2025· The More You Know
   • WatchEinstein Refrigerator Explained· The Wiser Way
3. refrigerator

   A common household appliance for keeping food cold.

Every link above cites the sources it rests on. Where the sources only support an inference, the wording says so.