Princess of Belgium Stephani; Countess of Lonyay Elemer, CH42474A


Image credit: Princesse de Belgique Stefani; Comtesse de Lonyay Elemer (1908)

On February 1, 1909, the Princess of Belgium Stephani and the Countess of Lonyay Elemer, both living in Schloß Oroszvâr, Hungary, were awarded a patent for developing an innovative food warmer that would prevent fuel spills and protect the surface from excess heat.

Date of Application: 13 February 1908

Date of Issuance: 1 February 1909

For more information, please refer to the following webpage:

Francesca Chiaradia
Francesca Chiaradia
PhD Student in Economics

My research interests include information economics, law and economics, economics of innovation.