title: Paul Schatz
text: # Paul Schatz
  
  Paul Schatz (22 December 1898, Konstanz – 7 March 1979) was a German-born sculptor, inventor and mathematician who patented the oloid and discovered the inversions of the platonic solids, including the "invertible cube", which is often sold as an eponymous puzzle, the Schatz cube. From 1927 to his death he lived in Switzerland.
  
  