What did Albert Einstein invent?

Einstein was best known as a theoretical physicist, but working in a patent office in Germany, he also became a less well known inventor. In physics, Albert Einstein is responsible for developing his Special and General Theories of Relativity (E=Mc2), and he did some important work on the photoelectric effect.

He co-invented a type of refrigerator with no moving parts; patent number 1781541. An electromagnetic pump; patent number GB303065, a self adjusting camera; patent number US2058562, and a sound replication device; patent number DE590783. Along with dozens of other patents worldwide.
Its no that he had invented anything really, because he is a physcist, but he had come up with E=mc squared. And the relevance between light and its reflection.